那么，我们一直被空气分子撞击着，可是为什么我们感觉不到呢？

So we're constantly bombarded by air molecules. So how come we don't feel that?

youdao

新技术利用了光子的一种倾向，它们会在与分子撞击后，获得一种螺旋形的而不是上下形式的波长。

The new technique exploits the tendency of some photons to adopt a corkscrewed rather than up-and-down wavelength after hitting a molecule.

youdao

我们认为，撞击月球的流星或经过的彗星尾巴可能会留下一些水分子。

We think meteors that crashed into the moon or tails of passing comets may have introduced water molecules.

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