Sometimes the birds sat down on the sea in groups, near brown seaweed that rolled on the waves.

VOA: special.2010.03.06

All right. So, let's look at this in another way, sometimes it's hard to picture these waves combining.

好的，让我们从另外一个方面来看，有时候很难想象这些波函数的组合。

麻省理工公开课 - 化学原理课程节选

Sometimes you know, people, they come in big waves.

有时候，人们成群结队地来到这里。

上西区的富人 - SpeakingMax英语口语达人