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1·Water covers a large proportion of the earth's surface.

水覆盖了地球表面的大部分。《牛津词典》

2·Ozone is the earth's barrier against ultra-violet radiation.

臭氧是地球防止紫外线辐射的屏障。《牛津词典》

3·Part of Earth's beauty comes from its oceans.

地球的一部分美来源于海洋。

4·We call this Earth's radiation budget.

我们称之为地球的辐射预算。

5·We can draw the earth's orbit round the sun.

我们可以画出地球绕太阳运行的轨迹。《新英汉大辞典》

6·At the same time, these clouds trap in some of Earth's heat.

与此同时，这些云吸收了一些地球的热量。

7·Periodic changes in Earth's orbit could affect Earth's climate.

地球轨道的周期性变化会影响地球的气候。

8·It is to get the rocket going fast enough to escape Earth's gravity.

是为了让火箭的速度足够快，足以逃离地球的引力。

9·In short, Venus seems to justify its long-held nickname of earth's twin.

简而言之，金星似乎证明了它长期以来被称为地球双生子的合理性。

10·We've already talked about how that affects earth's overall temperature.

我们已经讨论过它是如何影响地球的整体温度。

(1)earth's surface地球表面

(1)earth's atmosphere地球大气

(1)earth's crust地壳