That is why we don't worry about the motion of the nucleus 1 because the ratio of mass is about 2,000 to one.
这就解释了为什么我们不担心,原子核运动起来,因为原子核和电子的质量比约为2000:
it seems like Brown actually has a really nice, relaxed kind of campus.
我觉得和其他学校比起来,布朗大学的校园氛围更惬意。
which is pretty low in comparison to some other places,
但和其他地方比起来,比例还是比较低的。
Well, I would say... comparing to another university,
要我说的话……和其他学校比起来,
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