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

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。

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Even if Earth's surface were not actually sterilized by this bombardment, it is unlikely that any but the most primitive life-forms could have survived.

即使地球表面并没有被这种轰炸所灭绝，但除了最原始的生命形式之外，几乎不可能有其他生命形式幸存下来。

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This article has deduced the measuring formula of liquid surface tension coefficient by pulling escape, and got the primitive formula of liquid surface tension coefficient.

给出了用拉脱法测量液体表面张力系数测量公式的详细推导过程并得到了液体表面张力系数的原始公式。

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The spacecraft's data indicates the asteroid has a very primitive surface - rather like the chondritic meteorites that are sometimes picked up on Earth and which are assumed to have come from bodies that experienced no melting or differentiation.

BBC: A fleeting encounter with an 'inbetweener'