水覆盖地球的四分之三，但是仅有很少一部分是可以获得的淡水。
Water covers three quarters of the Earth, but only a small fraction is accessible as freshwater.
水覆盖了地球表面的大部分。
我们都知道虽然地球75%都被水覆盖，但是其中只有3%是淡水。
We all know that though 75% of the earth is covered with water, only 3% of it is fresh water.
虽然地球的75%被水覆盖，但只有大约2%是来自河流、湖泊、冰雪的淡水。
While 75% of our planet is covered with water, only about 2% is fresh water that comes from rivers, lakes, ice and snow.
它是蓝色的，因为水几乎覆盖了地球表面的四分之三。
It's blue because water covers almost three quarters of the Earth's surface.
地球表面近四分之三被水覆盖。
Nearly three quarters of the earth's surface is covered by water.
你知道地球四分之三是被水覆盖的吗？
Do you know three quarters of the earth is covered with water?
虽然地球近四分之三都被水覆盖，但我们依然缺乏饮用水。
While nearly 3/4 of the earth is covered with water, we are short of drinking water.
地球表面的百分之七十一被水覆盖。
Seventy-one percent of the earth's surface is covered by water.
虽然我们生活的地球大部分都被水覆盖，但是世界上水资源只有1%可供人类利用，其余的大部分都存在于海洋，冰块以及大气层中。
Although we live on a water-covered planet, only 1% of the world's water is available for human use, the rest locked away in oceans, ice, and the atmosphere.
液态和固态形式的水覆盖了地球表面的75%。
In liquid and frozen form, it covers 75% of the Earth's surface.
大约有71%的地球表面被水覆盖，大部分是海洋。
Roughly 71 percent of Earth's surface is covered by water, most of it in the oceans.
造访者们，你们需要知道地球表面70%是由水覆盖的，本质上说来人也由水构成。
Please be aware, visitors, that 70 percent of the Earth's surface is covered in water, and that human beings themselves are essentially made of the stuff.
虽然地球75%都被水覆盖，但其中只有3%是淡水。
Though about 75% of the earth is covered with water, only 3% of it is fresh water.
地球的表面被水覆盖，其中有97.5%是海水。
While the earth's surface is covered by water, 97.5 percent of it is salt water.
71%的地球表面被水覆盖，这还只是一个较小的数据，可能要比总的数据还要多9倍。
The 71% of the globe covered in water represents a lesser amount, perhaps by ten times, than the total figure.
科学家RussellSeitz在一个关于地球工程的国际会议上指出：“既然地球表面绝大部分是由水覆盖的，不让太阳变暗，那么就让水更亮吧。”
"Since water covers most of the earth, don't dim the sun," says the scientist, Russell Seitz, speaking from an international meeting on geoengineering research here. "Brighten the water."
从太空中看，地球是蓝色的。这是因为地球表面约百分之七十一都被水覆盖着。
From space, the earth looks blue. This is because about seventy-one percent of its surface is covered by water.
对你来说这可能似乎奇怪：因为我们的地球表面75%由水覆盖着。
This may seem strange to you, since nearly 75 % of the earth's surface is covered with water.
地球表面三分之二的面积被水覆盖。
水覆盖了地球表面的百分之七十。
水覆盖了地球表面的百分之七十。
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