大草原 The prairie
冷酷无情 Unforgiving...
变幻莫测 and unpredictable.
在这无尽的茫茫草原中 In this endless ocean of grass,
机会只有一次 there are no second chances.
只有把握机会的勇敢者 And only those brave enough to take it on...
才有资格将其称之为家园 will earn the right to call it home.
北美洲
无处藏身
五月中旬的埃布尔达平原 Mid-may on the plains of Alberta.
卡尔加里
一群美洲野牛正在迁徙 A herd of bison are on the move.
美洲的中心地带 The American heartland
曾经是三千万美洲野牛的家园 was once home to over 30 million bison,
比美洲当时的人口总和还要多 more than the entire human population of America at the time.
它们刚刚逃脱了灭绝的危险 Pulled back from the brink of extinction...
现今约有一万五千头存活 Today, some 15,000 still endure.
这头几周大的小牛犊 Just weeks old,
是这片广阔原野上 this calf is an innocent newcomer
新添的无邪小生命 to life on the great plains.
他是母亲唯一的孩子 He's his mother's only offspring.
她会不惜一切地保护他 And she'll do anything to defend him.
一群宿敌让牛群紧张了起来 An old foe has the herd on edge.
灰狼 Gray wolves.
这些总是成群行动的捕食者 Pack predators that attack as a gang,
已经尾随这群野牛数日了 they've been dogging the herd for days.
小牛犊还没有学会自卫 The calf hasn't learned how to defend himself
因此极易成为猎物 and is easy picking.
但是有身量巨大怒气冲冲的母亲保驾 But there's 1,000 pounds of ticked-off mother in the way.
狼群耐心等待着 The wolves are patient.
他们行动了 They make their move.
千百年的进化让猎手与猎物 Thousands of years of evolution have honed predator
在速度与耐力方面不相上下 and prey into a perfect match of speed and endurance.
这是一场智慧与策略的较量 This is a battle of wits and strategy.
野牛逃进河中 Hoping to shake the wolf pack,
希望甩掉狼群 the bison flee into the river.
湍急的水流让小牛精疲力尽 Fast-moving water is exhausting for the little ones...
但是母亲们知道他们必须继续前进 But the mothers know they must keep on.
猎手们穷追不舍 The pursuit is relentless.
狼群等待的时刻到来了 The moment the wolves have been waiting for.
与牛群分离之后 现在是二对三 Cut off from the herd, now it's two against three.
每当想要逃跑就会引来新一轮攻击 Every attempt to escape provokes a new attack.
绝望的母亲已经竭尽所能 The desperate mother can only do so much
保护怔住了的小牛 to protect the petrified calf.
他若学不会战斗 便会沦为盘中餐 He must learn to fight or die.
狼群嗅到了血腥味 The wolves smell blood.
剎那间... Then suddenly...
牛犊猛地一踢 a kick from the calf.
局势立马就翻转了 In an instant, it's a whole new game.
母子双剑合璧 Now mother and calf move as one.
但也清楚他们必须要回归大部队 But they know they must still rejoin the herd.
他们听到了前方树林中 Somewhere, ahead in the trees,
传来的隆隆蹄声 they can hear the thunder of hooves.
终于安全了 Safe at last.
狼群错失良机 The wolves have missed their chance.
今夜 他们只得饥肠辘辘 Tonight they'll go hungry.
这位美洲小居民在斗争中变强 Made stronger by the struggle,
已经学会了该如何反击 this young American has learned to fight back.
在这里 只有强者才能生存 Here, only the tough survive.
严酷 Harsh.
无情 Unforgiving.
无边无际 Endless.
这片绝地 This impossible landscape
考验着每一个踏足其上的生灵 tests all who set foot on it.
一位拓荒者将其横跨此处的经历 One pioneer who crossed it said
比作没有携带罗盘的 it was like setting sail on an ocean of grass
草海迷航 without a compass.
但是潜藏的机遇 Yet the promise of opportunity
还是吸引了无数拓荒者 drew millions into the heartland of America
来此处辛勤劳作 化草海为良田 to work the land and transform it
供养了整片大洲的居民 into the breadbasket that feeds an entire continent.
卡尔加里
芝加哥
丹佛
两亿公顷无遮无拦的平原 Half a billion acres of shelterless plains,
从墨西哥湾一路延展 wide-open from the Gulf of Mexico
直至北极 all the way to the North Pole.
西部的落基山脉控制着气候 The rocky mountains to the west control the weather.
它们引导着来自北方的寒风 They steer icy winds from the north
与来自南方的热带暖湿气流 into a head-on collision
迎头相撞 with tropical moisture from the south,
形成了地球上绝无仅有的大风暴 spawning storms like no other on earth.
从得克萨斯到威斯康辛 From Texas to Wisconsin,
在大自然的暴狂中 没有谁是安全的 nothing is safe from mother nature's violent temper.
这片土地及其生灵 The land and everything in it
都必须面对这凶猛的冲击 must brace for a ferocious beating.
冰雹不过是个开始 But hail is just the beginning.
龙卷风的风速高达480公里每小时 With winds of up to 300 miles per hour...
是这个星球上最具破坏性的力量之一 tornadoes are one of the most destructive forces on the planet.
每年约有400场龙卷风在大草原上肆虐 These are the routes of some 400 tornadoes
这些是它们的路线 that rip into the prairie every year.
华盛顿特区
孟菲斯
达拉斯
实际上 在过去的50年里 In the last 50 years,
它们的脚步已经遍及每一个州 they've touched down in virtually every state.
在大平原之上 Out on the Great Plains,
北美中西部的平原和河谷地区
无处躲避大自然之力 there's no place to hide from mother nature.
你只能尽力挺过去 You just tough it out as best you can.
但这些挖坑小能手 But these bunker-building homesteaders
找出了一个好办法 have figured out a way.
草原犬鼠聚集在一起 The prairie dogs have banded together
建设了一个地下村落 and built an underground village.
一个这样的小村落 A single settlement like this
可以容纳数千亲朋好友 can be home to thousands of cousins.
想在这里生存 就要密切注意近邻 Life here is all about keeping tabs on your neighbor
严防入侵者 and an eye out for intruders.
草原犬鼠有一套复杂的交流系统 Prairie dogs have a complex communication system
可以发出不同的叫声 and bark out distinct calls
以区别不同的捕食者 to identify different predators.
一条蛇蜿蜒爬行到了犬鼠的群落 A snake has slithered into dogtown
在一个满是幼鼠的洞穴外盘曲蜷缩 and curled up outside a den full of young pups.
但这只勇敢的犬鼠准备和这条响尾蛇较量一番 But one brave dog is about to take the deadly rattler on.
毒蛇和啮齿动物陷入了僵局 A standoff serpent versus rodent.
她必须得把蛇赶走 She must drive the snake away
不让其进入自己幼崽藏身的地道 and not into the tunnels where her babies are hiding.
这条蛇的毒液足以杀死一个九十公斤的人 The snake has enough venom to kill a 200-pound man,
更别说一只不到三斤的啮齿动物了 let alone a 3-pound rodent.
但是犬鼠锋利的爪子和牙齿 But the dog's sharp claws and teeth
也不是好惹的 are nothing to mess with.
她一步一步慢慢地 She lures the snake away from the pups
将蛇引离幼鼠 and, step by step,
赶出它们聚居的群落 gets him out of town.
这是警报解除的声音 The all-clear sound.
现在是庆祝时间 Time to celebrate.
赶走了一个外来者 马上又来了另一个 With one outsider gone, another moves right in.
在犬鼠群落边上 On the edge of town,
穴鸮一家人 a family of burrowing owls
在一个废弃的草原犬鼠洞穴安营扎寨了 has set up camp in an abandoned prairie dog den.
这群古怪的新来者有着奇怪的饮食习惯 An odd bunch, these newcomers have strange eating habits.
蚱蜢 Grasshoppers.
这就是跃动的美食 A single, bouncing calorie.
但这些高蛋白的小东西可不好逮 But these high-protein critters aren't easy to catch.
一次只把一只虫子摆上餐桌 Putting dinner on the table one bug at a time.
但是要为犬鼠群落接受 But to be accepted in dogtown,
还需要证明自己 you have to prove yourself.
警报再次响起 A new alarm call sounds.
一头獾 A badger --
以草原犬鼠为食的致命挖掘机器 A deadly digging machine that feeds on prairie dogs,
穴鸮幼鸟也不失为美食 and owl chicks are just as tasty.
妈妈把守入口 Mom guards the entrance.
爸爸飞走了 Dad flies off.
他想到一个计划 He's got a plan.
出其不意的反击 A sudden counterattack.
獾无法抵挡"空袭" The badger can't take the aerial assault
灰溜溜地走了 and retreats.
穴鸮为自己在犬鼠群落赢得了一席之地 These owls have earned their place in dogtown.
在竞争激烈的西部边缘 In the tight-knit outpost of the west,
胆小鬼是无法生存下去的 cowards don't last long.
在这片土地上 Out here,
孤军奋战者任凭大自然摆布而无能为力 those that go it alone are at the mercy of the elements.
丹佛 恶地国家公园
芝加哥
温哥华
但对某些生物来说 But for some,
恶劣的地貌却是它们的避难所 a ruthless landscape is a refuge.
大草原边缘 环境恶劣残酷 At the edge of the prairie is a place so unforgiving
只有不法之徒和已死之人才能称其为家园 only outlaws and skeletons called it home.
这里是马贼和火车劫匪的藏身之处 A hideout for horse thieves and train robbers --
恶地 The Badlands.
经历了五十万年刀风霜剑的侵蚀 Carved by 500,000 years of erosion,
这片土地上布满了锋利的山脊 this is a land of razor-sharp ridges
温度也异常极端 and extreme temperatures.
这里如此险恶 It's so forbidding,
鲜有生物敢冒险涉足 few settlers dared set foot in it.
这是鵟鹰 A ferruginous hawk.
她将巢筑在石头的尖顶之上 She's built her nest high atop a spire of stone,
免受天敌的威胁 safe from predators.
但南达科他州的夏天 But the South Dakota summer
今年却提早到来了 has arrived sooner than expected.
她的鸟宝宝羽翼未满尚不能飞 And her hatchlings are trapped in the exposed nest
被困于烈日下的鸟巢里 until they can fly.
四周无树 也就没有树荫 Without trees, there's no shade.
滚烫的石头犹如烤炉一般 The scalding stone becomes an oven.
温度攀升至近38摄氏度 Temperatures climb to nearly 100 degrees.
鸟妈妈拼命给雏鸟遮阴 She struggles to shade them,
但是她一米半长的双翼遮不住所有的雏鸟 but they've now outgrown her five-foot wings.
只有两只雏鸟能活下来 Only two of her hatchlings will make it.
大自然的残酷冷漠是无法改变的事实 Nature's cruel indifference is a fact of life.
它将适应能力锻造为一种开拓精神 It's carved resilience into the frontier spirit
并塑造了我们的民族品格 and shaped our nation's character.
哪怕是在非常意想不到的地方 And even in America's most unlikely places,
也有着无尽的乐观主义者 there are boundless optimists.
草丛深处 Deep in the grass,
一只雄性跳蛛 a male jumping spider,
正在寻找他的爱 and he's looking for love.
但他不是那种喜欢宅在家里织网的家伙 But he's not a stay-at-home, build-a-web kind of guy.
跳蛛生性好动 Jumping spiders like to wander.
他身型小如米粒 As small as a grain of rice,
可以把草叶当做高速公路来走 he can use the grass as a highway.
八只眼睛中有一只发现了雌性跳蛛 One of his eight eyes spots a female.
另一只跳蛛正在向她求爱 She's being wooed by another male.
但稍有不慎雌跳蛛就会杀了他 But a single misstep and she'll kill him.
她发现了下一个男伴 She spots her next date
亦或者是下一个受害者 or is it "Victim?"
对雄性跳蛛来说 For the male jumping spider,
跟雌性调情是个危险的游戏 flirting with a female is a dangerous game.
如果失败 If he fails,
她会用毒牙将其刺死 she'll stab him with her poison fangs
对其内脏大快朵颐 and slurp out his insides.
雄蛛靠近前 Before he gets any closer,
会先向雌蛛献上一支舞 he'll have to impress her with a dance.
她在故意刁难他 She's playing hard to get.
但他是不会放弃的 But he's not gonna give up.
是时候拿出实际行动了 It's time to make his move.
他必须得拿出看家本领 He's got to put on his best show
让她相信他不是食物 而是名很棒的配偶 to convince her he's a better mate than a meal.
压轴大戏是他为她唱了一首歌 For his grand finale, he sings her a song.
蜘蛛没有耳朵 Spiders don't have ears,
但她可以感觉到嗡嗡的震动 but she can feel his vibrations
从她的腿上传来 buzzing up through her legs.
他施下咒语 He casts his spell...
她也终于被其"蛊惑"了 ...and she is mesmerized.
求爱结束 雄蛛可以干正事了 With the courtship over, the male gets down to business.
他吐出带有精子的丝 He produces webs of sperm
然后将其插入她的生殖孔 and inserts them into her genital opening.
他活着逃走了 He escapes with his life,
而她 则怀上了几十个蜘蛛宝宝 and she is left pregnant with dozens of babies.
草原上炎热的夏天 A sweltering prairie summer
让野牛变得烦躁易怒 has got the bison all hot and bothered.
在睪丸激素的作用下 Testosterone has pumped up
强烈的竞争意识倍增 a fresh class of hot-headed rivals.
他们高涨的求偶欲望 Drive to mate surges through their veins
让他们争斗不断 and throws them into battle.
新老交替 The old-timer is defeated.
年轻一代接管了牛群 The newcomer has taken this round,
他第一次 and, for the first time in his life,
获得了交配的权利 has the right to mate.
但他的时间并不充裕 But he doesn't have much time.
夏季就要结束了 The clock on summer is running out.
已经临近九月 It's almost September,
对衣囊鼠来说 所剩的时间已经不多了 and for the pocket gopher, there's no time to waste.
这个忙碌的贮藏者一直在为过冬做着准备 This busy little hoarder's been prepping for winter.
与草原犬鼠不同 他是个纯粹的独居者 Unlike the prairie dog, he's a complete loner.
焦虑又多疑 Nervous and suspicious.
他的视力极差 He's got spectacularly bad eyesight,
而且是个聋子 and he's almost completely deaf.
但他的胡须能够察觉到 But his whiskers can pick up
极轻微的震动 even the slightest vibration.
山猫 The bobcat
是这片大陆上最悄无声息的捕猎者 is among the stealthiest hunters on the continent.
但是要抓住一只衣囊鼠并不容易 But as any gardener knows,
对此 园丁们深有体会 catching a gopher isn't easy.
他几乎从不离开他的安全洞 He almost never leaves the safety of his hole.
而是在土里挖洞前进 Instead, he moves by drilling through the dirt.
对山猫来说 And for the cat,
几乎不可能预测出这个小勘探者 predicting where the little prospector will pop up next
会在哪里露头 is almost impossible.
踏错一步都会让捕猎前功尽弃 Just the slightest misstep can spoil the attack.
衣囊鼠反应速度极快 The gopher has amazing reflexes
转瞬之间就会消失在土地里 and can vanish in less than a tenth of a second.
这是耐力与毅力的考验 This is a lesson in patience and persistence.
花了两个小时才捕到一只猎物 Two hours to make a single kill,
既然已经花了这么长时间捕猎 and when it takes this long to catch your food,
那干嘛急着吃掉呢 why rush mealtime?
在北美大草原上 夏天转眼就结束了 On the prairie, summer can come to an abrupt end.
寒冬天气突如其来 The sudden crash into winter weather --
生死之变可能在一夜之间发生 A deadly switch that can happen overnight
毫无预兆 without warning.
九月下旬 Late September.
那些无牵无挂的物种 For those with nothing to tie them down,
是时候转移阵地了 it's time to move on.
随着冬天临近 As winter closes in,
四亿只鸟占据了中心地带的天空 400 million birds take to the skies over the heartland
向南方进发 and head south.
一群沙丘鹤仍逗留在这 A flock of sandhill cranes lingers.
但他们也不能拖延太久 But they can't delay much longer.
第一场雪是一个警告 The first snowfall is a warning.
等待他们的是去往墨西哥2400公里的旅途 Ahead of them is a 1,500-mile journey to Mexico.
丹佛
芝加哥
这是草原上 It's the final phase
大规模迁徙的最后阶段 in the mass evacuation of the prairie.
圣安东尼奥
留下来的动物们无处可逃 Those left behind now have no escape.
大陆上方空气团的交锋 The fight between the air masses battling
一触即发 over the continent reaches a tipping point.
南方暖锋在与北方冷锋的对抗中 The warm southern front struggling
落于下风 against the northern winds is defeated.
极地的冷空气横扫过大草原 Icy polar air now rushes down the open prairie.
只有强者才能幸存 Only the strong will survive.
盐湖城
丹佛市
堪萨斯城
破晓时分 丹佛东南方160公里处 Daybreak, 100 miles southeast of Denver.
突如其来的寒流改造了陆地 A sudden cold snap has transformed the land.
北部的育空河与狭长的得克萨斯之间 Nothing but frozen earth from the northern Yukon
只剩冻土 to the Texas panhandle.
在冬季 In winter,
住在草皮房里的移居者发现 settlers in their sod huts found themselves
他们身处于一片苍茫之中 marooned in a featureless void.
大草原就像被放大了几倍 Distances on the prairie seemed to multiply,
地平线更加遥不可及 The horizon twice as unreachable.
在这片暴露的土地上 In this exposed landscape,
猎物们能清楚地看见跟踪者 prey can clearly see their stalkers.
伏击 Ambush attacks
几乎毫无可能 become virtually impossible.
初冬时期 叉角羚处于有利地位 In early winter, pronghorn have the upper hand.
作为陆地上奔跑速度最快的动物之一 One of the fastest land animals on earth,
他们甚至比非洲猎豹跑得还快 they can outrun even a cheetah.
在大草原坚硬的冻土上 On the rock-hard soil of the frozen prairie,
他们能达到时速一百公里 they can reach speeds of 60 miles per hour.
猎豹只有全力冲刺时才能达到这个速度 Cheetahs can only sprint at that pace.
叉角羚可以不停歇地以六十公里的时速奔跑 Pronghorn can run at 40 for miles without stopping.
但冬天才刚刚开始 But winter has just begun.
接连不断的暴风雪从北方横扫而过 Snowstorm after snowstorm sweeps down from the north.
风速超过一百公里每小时 60-mile-an-hour winds.
对于野牛 冬天是与饥饿的较量 For the bison, winter is a fight against starvation.
他们每天要吃九公斤的草 They must consume over 20 pounds of grass a day
才能活下去 to stay alive.
但野牛摄入的能量并不能满足消耗 The bison burn more calories than they consume.
随着时间流逝 As the weeks grind on,
他们越来越虚弱 They grow weaker.
对一些野牛来说 已经难以承受 For some, it's simply too much.
这头九个月大的牛犊 The 9-month-old calf,
已经虚弱不堪 迷失了方向 exhausted and disoriented.
牛群只能抛弃他继续前进 The herd must move on without him.
在印第安人的传说中 In native American legends,
死者由他们的祖先引导走向来生 the dead are guided into the afterlife by their ancestors.
在冬季漆黑的夜晚 In the dark of the winter night,
祖先手中的火炬点亮了前进的道路 the flames of their torches light the way.
在冬至时分 Around the winter solstice,
这些北方的极光 these northern lights seem to
闪耀在整片平原之上 plunge south over the plains,
芝加哥
甚至在俄克拉荷马州的塔尔萨都能见到 visible as far down as even Tulsa, Oklahoma,
塔尔萨
这是北半球能见到极光的最南端 further south than almost anywhere else on the planet.
它们是我们观测地球磁场 They're our fleeting glimpse
难得的机会 of the earth's magnetic field,
其他时候磁场都是看不见的 a force that's otherwise invisible,
除非你拿着一个指南针 unless you've got a compass.
然而 有一位神奇的猎人 But there's one amazing hunter
其导航的能力 who's got that navigational beacon
是与生俱来的 hardwired into his blood.
狐狸 The fox.
这种聪明的犬类有着惊人的本领 This clever canine has an amazing set of skills.
厚重的大雪覆盖了达科他州的黑山山脉 Deep snow covers the Black Hills of the Dakotas.
田鼠躲藏在那冰毯之下 And hidden under that icy blanket,
四处窜动 field mice are stirring.
捕捉到猎物的可能性看似微乎其微 The odds of catching anything might seem hopeless,
对他却并非如此 but not to him.
为捕捉猎物 他纵身一跃 An enormous leap to catch a critter
钻入一米深的雪地 under three feet of snow.
他到底是如何做到的呢 But how the heck did he do it?
他正追踪着什么东西 He's homing in on something.
但这需要注意力高度集中 But it takes immense concentration,
并且容不得一点声响 and he needs complete quiet.
他的耳朵能捕捉到雪地深处 His ears can pick up the faintest scamper
极小的动静 from beneath the snow.
但有一个条件 But there's a catch.
只有朝向北面时 He almost always comes up empty-handed,
才不至于次次失手 unless he's facing north.
但这该如何解释呢 But how's that possible?
难以置信的是 As unbelievable as it sounds,
科学家们认为他实际上是在识别 scientists now think he's actually homing in on
地球的磁场 the magnetic field of the planet,
以此来测定他的轨道 using it to calculate and plot his trajectory --
化身为用来击中目标的数学导弹 The kind of math missiles use to hit their targets.
稍一分心 他就会错失良机 Just the slightest distraction can throw him off.
如果他向着正北面 But if he's got the north pole in his sights...
几乎总能美餐一顿 He's guaranteed a meal
成功的概率大约是四分之三 nearly 75% of the time.
漫漫冬季不知何时结束 The length of winter has become impossible to measure,
夏天成了朦胧的记忆 已然冷却 summer now just a vague memory that's grown cold.
然而正当时间看似完全停止时 But just as it seems that time has stopped completely,
生命之声归来了 the sound of life returns.
雪雁是打破冬季沉闷的第一波浪潮 Snow geese are the first wave of invasion into winter.
堪萨斯城
数百万的雪雁穿越平原飞向北方 Optimistic millions head north across the plains.
位于堪萨斯城外 Just outside Kansas City,
这些先驱者到达时 those at the tip of the spear
湖面仍旧冰冻着 find this lake still frozen.
着陆因此难以控制 Landings are hard to control.
这些雪雁必须等待湖水融化 These geese must wait for the ice to melt
才能继续向北前进 before they can continue north.
这片湖的老大对此是喜闻乐见 The masters of the lake welcome their guests.
每过一天 With each passing day,
越来越多疲倦的雪雁在此聚集 more and more weary flocks pile up.
超过二十万只雪雁挤满了冰面 Over 200,000 geese now clog the ice...
湖老大翘首以盼的时刻来临了 The moment their hosts have been waiting for.
雪雁被老鹰吓得飞离了 The eagles deliberately scare the geese
湿滑的冰面 off the slippery ice.
雪雁们纷纷展翅而飞 In the chaos of a mass takeoff,
混乱中撞到彼此 geese collide and crash into each other,
受了伤 breaking bones.
受伤的雪雁孑然一身 Alone on the ice,
无处可逃 the injured goose has no escape.
美食被瓜分完毕 The corpse picked clean,
剩下的成了玩具 what's left becomes a toy.
湖面一片死寂 The lake is silent.
雪雁尸骨无存 The geese, gone.
三月伊始 Early march.
干燥的风带走了 The dry wind has erased the snow
堪萨斯洲蓝山上的雪 from the Blue Hills of Kansas.
去年夏天的绿草变成了枯草 毫无生机 Last summer's grass is now a dead sea of straw.
有一种动物 已然等不及春天来临 One animal is impatient for spring to arrive.
草原榛鸡正在表演拿手好戏 These prairie chickens are strutting their stuff,
来吸引雌性榛鸡 hoping to catch the eye of the gals.
花哨的舞步 Fancy footwork.
伴随着咯咯的叫声 And a bit of clucking.
但雌性榛鸡已经看厌了这些 But the ladies have seen it all before.
她们想看点刺激的 They like their chicken tough.
雄性榛鸡必须一鼓作气 The gents have got to puff themselves up
决出胜负 and duke it out.
输家 Defeat...
赢家 And victory.
雌榛鸡就此选好了夫婿 This lady's picked her man.
另一求爱者无法忍受 But the other suitors can't bear it.
嫉妒之火再次点燃 Jealousy and outrage reignite.
更大的威胁中断了这场斗争 But the fight is interrupted by a larger threat.
春天带着复仇之火回到了这片草原 Spring roars onto the prairie with a vengeance.
春风以80公里的时速使火焰加速蔓延 50-mile-per-hour winds fan the flames across the horizon.
大火持续多日 The blaze burns for days,
吞噬着数百英亩的土地 devouring hundreds of acres.
然而在这草原上 大火之后便是新生 But on the prairie, fire is the engine of rebirth.
肥沃的灰土孕育了一个崭新的世界 A new world springs from the fertile ash.
大草原经历了一个完整的循环 The prairie has come full circle,
在这片大陆上 But on this continent,
生存之战从未结束 the fight to survive is never over.
草原之外 Beyond the prairie
潜藏着更大的挑战 loom even greater challenges.
最为残酷的战场 A battleground harsher than any other.
北美洲考验着每一个将其称为家园的生灵 North America tests all who dare to call it home.
很容易就能找到这种 The largest land animals on the continent
美洲大陆上最大的陆栖动物 aren't difficult to find.
放轻松 小伙子 我没敌意 Easy. Good lad. Easy.
放轻松 Easy.
棘手的部分是如何安全地拍摄它们 The tricky part is filming them without getting trampled,
特别是交配季节 especially during mating season.
当身强力壮的公牛打起来时 When huge bulls go head to head,
他们可不管是谁挡了道 they don't care what gets in their way.
-加文 小心 -什么 - Gavin? Just be aware. - Yeah?
加文 离远点吧 Gavin, you need to move.
摄影组的加文•瑟斯顿和亚当•查普曼 Film crew Gavin Thurston and Adam Chapman
时不时被迫撤退 kept getting forced into retreat.
解决方法 Solution
一台装载在全地形车上的稳像旋转摄像机 A stabilized gyroscopic camera mounted to their ATV
一个能在撤离时 A makeshift mobile filming unit
依然保持运转的临时移动摄影装置 able to keep rolling even while running away.
我们还活着呢 We're still alive.