我踩在了猫的尾巴上，于是它嘶嘶地叫了起来。

My cat hissed when I stepped on its tail.

《柯林斯英汉双解大词典》

于是他从书架二层上拿出了一本鬼故事书。

He has taken out one damned storybook thereupon on secondary bookrack.

youdao

我向我的学生解释说，实际上我觉得他比我更困惑，于是我便进行了反驳。

I explained to my student that I actually thought he was rather more confused than I was, and I argued back.

youdao

the act of actually pushing someone over onto the tracks and killing him, you are actually killing him yourself.

真的动手把人推到轨道上让他死的这种行为，就等于是你亲手杀了他。

耶鲁公开课 - 公正课程节选

Jews, for example, since the time of Julius Caesar, who befriended the Jews because they helped him out politically a lot, he gave them certain privileges.

比如犹太人，恺撒本人对犹太人很友好，因为他们对他政治上帮助良多，于是他回以他们某些特权。

耶鲁公开课 - 新约课程节选

Then I look at all the other non-search applications on the Internet.

于是我着手研究互联网上,其他非搜索类的应用。

斯坦福公开课 - 百度CEO李彦宏演讲：全球最大搜索引擎的发展课程节选