地球的力量

Someday, the Straits of Gibraltar will close up again
有一天直布罗陀海峡会再次关闭
and then the Mediterranean will disappear once more.
然后地中海又会再一次消失
Today's oceans are far more than just reservoirs of water
但是海洋并不仅仅是蓄水池

that fill and empty as the continents move.
随着大陆移动要么灌满水要么干涸
They are crucial for the way the planet works and for the existence of life itself
它们对于地球来说 对于生命本身的存在来说都很关键
To understand why, you have to see them not as individual seas,
为了了解原因你不可以将它们看作是单独的海域
but as a whole, one single system.
而是看做是整体，一个系统
Even though we can't live beneath the waves,
虽然我们不能在海浪下生活
these vast bodies of water are vital to our very existence.
这片广阔的海水对于我们的存在来说非常重要
Much of that is down to a group of ocean inhabitants that are surrounding me.
很大一部分原因是因为海洋地下的一群生物 生活在我们身边
Single-celled organisms so small they're invisible to the naked eye.
单细胞有机体非常小肉眼是看不到的
They're known as phytoplankton.
它们被称作是浮游植物

重点讲解

1、close up
(通常因离开)关上，关闭
Just close up the shop.
把店关了就好了。
The summer house had been closed up all year.
这座消夏别墅关了整整一年。
(开口、裂缝等)闭合；使合上
Don't use cold water as it shocks the blood vessels into closing up.
不要用冷水，那样会刺激血管闭合。
2、individual
个别的;单独的
They wait for the group to decide rather than making individual decisions.
他们等待团体作决定而不是各自作出决定。
Aid to individual countries would be linked to progress towards democracy.
对个别国家的援助会与其民主进程相挂钩。
独特的;有个性的
It was really all part of her very individual personality.
那其实都是她独特个性的表现。
The language is highly individual.
语言非常独特。
3、invisible
看不见的;隐形的
The lines were so finely etched as to be invisible from a distance.
线条被蚀刻得如此精细，在远处看都看不见。
The belt is invisible even under the thinnest garments.
这种腰带即便在最薄的衣衫下都看不出来。
无形的
Parents fear they might overstep these invisible boundaries.
父母担心他们可能会逾越这些无形的界限。
Her father's face had suddenly tightened as though he was being strangled by invisible hands.
她父亲的脸突然僵硬了,仿佛是被无形的双手扼住了脖子。