地球的力量 第4集 海洋(2)藍色的星球
Three-quarters of Earth is covered in water.
地球四分之三被水覆蓋著
It's why it's called the blue planet.
所以我們稱之為藍色的星球
But imagine Earth without its oceans.
但是想象一下沒有海洋的世界吧And instead, with all thewater in the world gathered together in a ball.
所有的水聚集到一起形成一個球體 就會是這個樣子
There's not that much really.
其實沒有這么夸張
But this water is what makes Earth different
但是水是地球區別于太陽系其它星球的一個特征
from every other planet in the solar system.
但是水是地球區別于太陽系其它星球的一個特征
The oceans have been here for almost four billion years,
海洋已經在這里存在約40億年了
carving the coastline, driving the climate
雕刻著海岸線，改變著氣候變化
and controlling the destiny of life itself
控制著生命本身的命運
