把它们从地球的表面上彻底清除。

We should clean them right off the face of the Earth.

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从这些研究中，科学家们得出结论，海洋覆盖着原始地球的表面，其中含有构成生命的基本分子。

From these studies, scientists have concluded that the surface of the primitive Earth was covered with oceans containing the molecules fundamental to life.

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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.

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That is the lowest point on the earth's land surface so this dramatic drop in just a very short geographical area.

这是地球陆地表面的最低点,这急剧下降是在很短的地理范围内。

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One says, leave any body near the Earth, it yields a force.

有人说,在地球表面的任何物体,都会受到力的作用

耶鲁公开课 - 基础物理课程节选

So, when you divide by m, m cancels and everything falls at the same rate on the surface of the Earth.

因此,当等号两边除以 m 时,m 被消去了,在地球表面的所有物体,都以相同的加速度下落

耶鲁公开课 - 基础物理课程节选