I've been teaching long enough to know that doing derivations in class is equivalent to pouring ice water on the proceedings, so I do this sparingly.

我已经教了这么长时间书,所以我知道在课堂上讲推导,就好像泼冰水一样，所以我在讲这个的时候很小心。

麻省理工公开课 - 固态化学导论课程节选

Muscovy had been one of the tributaries of the Mongols, who sacked Kiev in the 1230s, after pouring into Russia and what now is Ukraine.

俄国曾是蒙古的进贡国之一,1230年代,蒙古人洗劫了基辅,蒙古铁骑涌入俄国以及现在的乌克兰

耶鲁公开课 - 欧洲文明课程节选

So, the troops come pouring in.

这样,军队从这里涌入

耶鲁公开课 - 1871年后的法国课程节选