Under the hard lights, indoors, they had served her until they ached, and it was a luxury to feel that in the darkness no grimacings need call upon them.

在刺眼的灯光下， 在室内，他们一直服侍着她， 直到他们感到疼痛， 感到在黑暗中不需要他们做鬼脸是一种奢侈。

For 2 billion years, all organisms on Earth are unicellular, and they likely lived in the oceans, shielded from the hard ultraviolet light of the sun but then something remarkable happened, Photosynthesis.

20亿年以来，地球上的所有生物都是单细胞的，它们很可能生活在海洋中，不受太阳紫外线的照射，但随后发生了一件非同寻常的事情，就是光合作用的产生。