有时候我们把光看成光束模型，看成光射线。

Sometimes we model light as beams of light, as rays of light.

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有时候我们把光看成一种波。

And sometimes we model light as a wave.

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有时候我们把它用于否定。

Sometimes we use it in the negative.

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We could also, I think, well, maybe this isn't written out in terms of that convention, which sometimes it's not, so let's also try writing it, such that we have the hydrogen and the oxygen atom there.

我们也可以，我想，好吧，还有可能它不是按照惯例写的，有时候会出现这样的情况，因此，让我们把氢原子和,氧原子成键的情况也写出来。

麻省理工公开课 - 化学原理课程节选

our culture looks to celebrities, fortunately and unfortunately sometimes, for, as role models

我们的文化关注名人，把他们当做榜样，这有时候是一种幸运，而有时候也是一种不幸。

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Now, it gets complicated because there are some cases where we do allow stereotypes to play a role.

但实际情况没有这么简单,因为有时候我们确实允许,把刻板印象应用到生活中。

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