我们的星球（2019）

...and could kill him in seconds.
‎但它现在太饿了 不能轻易放弃
But he's too hungry to give up now.
‎出乎意料的是 老狮子退让了
Remarkably, the old puma backs down
‎允许小狮子享用美食
and allows the youngster to feed
‎这种行为在雄狮之间非常罕见
behavior that is very rare among males.
‎马奇托的勇气 ‎也许给它赢来了更多的时间
Machito's courage may have bought him more time
‎而它的旅程才刚开始
but his journey has only just begun.
‎雄性美洲狮跑得又远又快
Male pumas travel far and quickly.
‎因此 人们对于它们的独♥立♥生活 ‎知之甚少
As a consequence, very little is known about their independent lives.
‎有人认为 很少有美洲狮 ‎第一年能独自存活下来
It's thought that few survive their first year alone.
‎幸运的话 小狮子会是其中一员
With luck, he'll be one of them.
‎（十二月）
‎今天是平安夜
It's Christmas Eve
‎这个时候的圣诞岛海岸呈鲜红色
and the shores of Christmas Island are bright red.
‎真是十年一遇
Once in a decade
‎洋流的方向恰到好处 ‎小螃蟹可以顺着这股洋流回家了
the ocean currents are just right for the crablets to return.
‎这是有史以来规模最大的回家之旅
And this is one of the biggest ever seen.
‎数十亿只小螃蟹挤在珊瑚礁上…
Billions crowd the reefs...
‎当地的动物因此困惑不已
...bewildering the locals.
‎小螃蟹想方设法
They try to reach dry land
‎回到陆地
in whatever way they can.
‎它们需要到达两公里外的森林
They need to get to the forest from where their parents came
‎因为那是小螃蟹父母的出生地 ‎也是安全的归宿
and where they will be safe, just two kilometers away.
‎然而 它们的父母并不是针头般大小
But their parents weren't the size of a pinhead.
‎为了到达目的地 ‎它们现在脱下外壳 换下潜水服
Now they shed their shells, changing their wetsuits
‎换成更易于呼吸的东西
for something in which it's easier to breathe.
‎小螃蟹准备好了
Ready.
‎但在离开海滩之前…
But before they've even left the beach...
‎一个不速之客突袭了它们
...they are attacked by someone unexpected.
‎这是妈妈吗？
Mother?
‎成年红蟹显然不太适合照顾幼崽
Clearly, adult red crabs are not very child-friendly.
‎这帮小螃蟹该离开海滩了 ‎并且动作必须快
Time to leave the beach, and quickly.
‎为了离开这里 它们需要攀爬海堤
That requires climbing the seawall.
‎它们眼中的海堤 ‎就像我们眼中的摩天楼一样令人生畏
As formidable as a skyscraper would be for us.
‎爬上山顶之后 ‎小螃蟹必须匍匐穿过小镇
Once at the top, they must creep through the town.
‎然而 作为几十亿大军的一员
But it's hard to keep a low profile
‎想保持低调并不容易
when you're part of an army of several billion.
‎小螃蟹只有芝麻般大小
The world is very, very dangerous
‎对它们来说 这个世界充满危险
when you're very, very small.
‎为了避免危险 ‎小螃蟹需要注意自己的脚下
So they need to watch their step.
‎它们终于到达了森林的边缘
The forest edge.
‎安全的归宿近在眼前
Safety is in sight.
‎但现在松懈下来还太早
But it's too soon to relax.
‎因为吃小螃蟹的
Yellow crazy ants
‎黄疯蚁来了
which eat crablets.
‎那些安全通过的小螃蟹
Those that make it through
‎可算可以在家过圣诞节了
are home for Christmas.
‎在接下来的五年里 ‎它们会觅食和成长
They will spend the next five years feeding and growing
‎之后踏上重返海洋的旅程
before making the return journey to the sea
‎接着在海洋里产下自己的小螃蟹
and then producing little crablets of their own.
‎动物第一次踏上的旅程
An animal's first journey
‎几乎总是最具挑战性的
will almost always be its most challenging.
‎然而 其中有些旅程特别令人生畏
But some are especially daunting.
‎就拿年轻的蓑羽鹤来说
Young demoiselle cranes
‎它们面临着 ‎所有鸟类中最艰难的迁徙之一
face one of the toughest migrations made by any bird.
‎为了逃离冰封的蒙古
Fleeing frozen Mongolia
‎蓑羽鹤得南下到印度过冬
they travel south to spend the winter in India.
‎但那里的旅程并不总是这般艰难
But the journey there wasn't always as hard as this.
‎在四千五百万年前
Forty-five million years ago
‎蓑羽鹤底下的这片土地还比较平坦
the land beneath them was comparatively flat.
‎那时的土地被挤压 ‎并被向上推 形成巨大的褶皱
It was then crushed and pushed upwards into great folds
‎这些褶皱后来形成了 ‎地球上最高的山脉
creating what was to become the highest mountain range on Earth.
‎也就是喜马拉雅山
The Himalayas.
‎为了越过山脉 ‎蓑羽鹤必须飞到海拔八千米处
To cross, the cranes must now ascend to 8,000 meters above sea level.
‎它们飞得越高 ‎周围的氧气含量就越低
The higher they fly, the lower the oxygen.
‎而精疲力尽的蓑羽鹤 ‎若受到袭击 很容易受伤
Exhausted, they're vulnerable to attack.
‎此时 被暖空气托起的金雕 ‎从陡峭山坡上飞起
Golden eagles, lifted by the warm air rising from the steep slopes
‎在鹤群上方翱翔
soar above the cranes.
‎没多久 金雕突然朝鹤群俯冲飞去
And then, they dive down towards them.
‎为了拿下♥体♥型这般巨大的猎物
To bring down such large prey
‎这对金雕协同合作
the eagles work as a pair.
‎结果这只雏鹤的第一次旅程
This chick's first journey
‎变成了它的最后一次
has become its last.
‎有比这更低更安全的路线
There are lower, safer routes than this.
‎即便如此 鹤的天性
But the cranes' instinct
‎就是朝着它们一直以来认定的方向飞
is to fly in the direction they have always taken.
‎直到最近 鹤群遭受了天敌的追捕
Until very recently, they faced hunting
‎还损失了许多常去的觅食地点
and the loss of many of their traditional feeding sites.
‎就在这时 印度北部的一个小村庄
Then one small village in Northern India
‎改写了它们的命运
changed their fortunes.
‎奇倩的村民开始喂养和保护鹤
The people of Khichan began to feed and protect the cranes.
‎因此 每年冬天越来越多的鹤前来
More and more cranes arrived each winter.
‎多亏这群鹤的光顾 ‎如今奇倩每年有一万五千名游客来访
Fifteen thousand of them now visit Khichan every year.
‎鹤群汇聚成地球上 ‎规模最大的鹤类集♥会♥
It's the greatest gathering of the species to be seen anywhere.
‎对于雏鹤来说
For the chicks
‎它们往南穿越地球上最高山脉的旅程
their journey south across the tallest mountain range on Earth
‎终于告一段落了
is finally over.
‎至少今年可以安定下来了
Until next year.
‎在这个日新月异的世界
In this changing world
‎在迁徙途中的动物 ‎比任何时候都需要我们伸出援助之手
animals on the move need our help more than ever.
‎云南的热带雨林
The tropical forests of Yunnan
‎是中国濒危野生象仅存的家园
are the last home of the endangered wild elephants of China.
‎在2020年三月
In March 2020
‎这片森林遭受了有记载以来 ‎规模最大、时间最长的干旱
the forest was hit by the biggest, longest drought on record.
‎树木因此枯死
Trees died
‎大象也跟着挨饿
and elephants starved.
‎而新的家庭成员快要出生了…
With a new member of the family about to be born...
‎这群大象决定搬走
...the herd decided to move.
‎但这趟旅程注定不平凡
But this was to be no ordinary journey.
‎很快 它们的故事 ‎吸引了全世界的注意
Their story captured the world's imagination.
‎因为最大的陆地动物
Here was the largest land animal
‎在地球上人口最多的国家
trying to find somewhere to live
‎正找寻落脚的新家
in the most populated country on Earth.
‎它们一家一路往北走
The family headed north
‎走进了一个与离开时截然不同的中国
into a very different China from the one they had left behind.
‎八个月以来 ‎它们徒步穿越陌生的新大♥陆♥
For eight months, they trekked through strange new lands
‎尽管如此 也没能找到任何安身之处
but couldn't find anywhere to settle.
‎因此 它们的新生儿 ‎是在迁徙中出生的
So their newest arrival was born on the move.
‎这对大象来说非常不寻常
That, for elephants, was highly unusual.
‎这样出生的新生儿 ‎其生命的起点注定会很疲惫
His start to life would be very tiring.
‎即便如此 现在有17只大象的 ‎一大家子不得不继续前行
But the now 17-strong family had to keep traveling.
‎对于那些刚学会走路的小象来说
And for those who'd only just learned to walk
‎每跨过一处障碍 都困难不已
every hurdle was a problem.
‎而且每个坡的坡度
And every slope...
‎都很高
...a steep one.
‎象群又继续走了四百公里的路
They continued for another 400 kilometers.
‎一路上 它们越往北跋涉
And the further north they trudged
‎所到之处就越没有归宿感
the less they belonged.
‎象群为了吃喝
To eat or drink
‎被迫偷粮食来填饱肚子
they were forced to steal.
‎但出乎意料的是
But remarkably
‎人们并没有把象群赶走
instead of driving them away...
‎而是它们保驾护航…
...people gave them safe passage...
‎任其掠夺粮食
...and allowed them to plunder.
‎这群大象迁徙了整整一年后
After marching for a year
‎个个筋疲力尽 倒地就睡
they were exhausted.
‎因为大象通常会站着睡
Elephants usually sleep on their feet
‎只有当它们特别疲惫之时 ‎才会躺下睡
and only lie down when they are completely fatigued.
‎如果我们一意孤行 ‎不断破坏生态系统 改变我的地球
If we continue to change our planet
‎越来越多的动物
more and more animals
‎会被迫踏上这样的新旅程
will be forced to make new journeys such as this.