我们星球上的生命（2023）

到能量爆发
to explosive energy
仅在毫秒之间
in just a fraction of a second...
产生的速度和力量
generating enough speed and power...
足够将其五米长的身体
to launch its five-meter-long body...
从水中弹出
out of the water...
只因腹中饥饿
all on an empty stomach...
一气呵成
and a single breath.
这是一种成功的技巧 对于如今的鳄鱼是如此
It's a technique as successful for crocodiles now
对于其史前祖先也是如此
as it was for their prehistoric ancestors.
今天的鳄鱼主宰着其生活的水域
Today's crocodiles dominate the waters they live in...
但它们已不再是 从前那个分布广泛的捕食者
but they are not the widespread predators they once were.
因为在三叠纪
For back in the Triassic,
自然的力量 会将生命的故事带向一个全新的方向
the forces of nature would send the story of life in a completely new direction.
（2.34亿年前）
持续的火山喷发引起又一轮全球变暖
Sustained volcanic eruptions caused another period of global warming.
随着海洋温度的升高 海洋蒸发大大加强
As sea temperatures rose, they supercharged oceanic evaporation.
在盘♥古♥大♥陆♥北部 潮湿的风遇上3000米高的山脊
In northern Pangaea, moisture-laden winds hit a 3,000-meter-high ridge...
形成超级季风天气系统
creating megamonsoonal weather systems.
开始下雨
And it started to rain...
规模极大
on a biblical scale.
全球范围内 暴风雨肆虐
Across the planet, storms raged.
倾盆大雨持续了超过100万年
The downpours lasted more than a million years...
将早期盘♥古♥大♥陆♥的干燥沙漠 变为遥远的记忆
turning the dry deserts of early Pangaea into a distant memory.
在遥远的北方 山脉中的急流从高处奔流而下
In the far north, torrents flowed from high in the mountains.
地表的水重画地貌
Surface water rewrote the landscape...
带来富含营养的泥沙
carrying with it nutrient-rich silt.
水道很快覆盖超过160万平方公里
The waterways soon covered more than 1.6 million square kilometers...
相当于阿♥拉♥斯加州的面♥积♥
an area the size of Alaska,
创造出地球历史上最大的三角洲
creating the largest delta in Earth's history.
这些肥沃的水道成为新世界的命脉
These fertile waterways became the lifeblood of a new world...
进化的源泉
the fuel for evolution.
针叶树崛起
Conifers rose to the fore.
自从二叠纪灭绝以来
And for the first time since the Permian extinction...
我们的星球 第一次变回巨型生物的森林地
our planet returned to a forested land of giants.
（2.1亿年前）
许多古代爬行动物 未能适应这片新的土地
Many ancient reptiles failed to adapt to this new landscape.
但有一群生物 拥抱了这种植物生态的变化
But one group embraced this change in plant life...
并将很快崛起 接管整个世界
and would soon rise to take over the world.
幼崽开始生活 与其他爬行动物非常相似
The youngsters start life much like other reptiles.
它们从蛋中孵出
They hatch from eggs...
有鳞状皮肤
they have scaly skin...
自从出生的那一刻
and they are left to fend for themselves...
就要自己保护自己
...from the moment they enter the world.
但确有不同之处
But there are differences.
它们拥有一种更高效的呼吸系统
They have a much more efficient breathing system
能够持续将血液送至肺部
that continuously pumps blood across their lungs...
使其在奔跑时无需停下来呼吸
allowing them to run without having to stop to catch their breath.
它们的腿长在身体下方而非侧面
Their legs extend beneath their body rather than to the side
所以可以直立前行
so they can walk upright.
这使小小的幼崽能够长大
This allows tiny hatchlings to grow
成为体重是自己50倍的成年动物
into adults that are 50 times their size.
它们是爬行动物家族树的一部分
They're part of the reptile family tree,
但自成一个独特的分支
but are their own unique branch.
早期的巨兽 比如板龙
Early giants, like Plateosaurus,
可以够到新的更高的食物来源
can reach the new taller food sources.
它们的胃可以消化坚硬的针叶
Their stomachs can digest the tough conifer needles...
巨大的身形
and their sheer volume
帮助它们在白天和黑夜 维持更高的体温
helps them maintain a higher body temperature day and night.
这是一个成功方程式
It's a winning formula
预示着一个新时代的到来
that will herald a new age.
（1.52亿年前）
侏罗纪
The Jurassic.
这个新王朝将统治超过1.5亿年
This new dynasty would rule for more than 150 million years.
在这个王朝
A reign
将看到 一些有史以来最具标志性的生物
that would see the rise of some of the most iconic creatures to ever walk the Earth.
欢迎来到恐龙时代
Welcome to the age of dinosaurs.