He hit me, so I hit him back–the first time in my life I'd stood up to him.

他打了我，我就还手打了他–这是我生平第一次反抗他。

《柯林斯英汉双解大词典》

I want you to cast your minds back to the first time you met.

我要你们回忆初次见面的情景。

《牛津词典》

Go back in time: the first step to overcoming self doubt is to recognize that it's there in the first place.

及时回到自我：克服自我怀疑首要的第一步是知道到它就在这里。

youdao

Now it is time to come back to the world of the twenty-first century.

VOA: special.2010.02.03

Welcome back for those returning, welcome to CS50 for those joining us for the first time.

欢迎老同学，也欢迎新同学。

哈佛公开课 - 计算机科学课程节选

So how would we go about solving this problem if I told you not only was there a maximum weight, but there was a maximum volume. Well, we want to go back and attack it exactly the way we attacked it the first time, which was write some mathematical formulas.

有些时候两个都重要,所以如果我告诉你这里不仅有,最大重量还有最大容量，我们应该怎么解决这个问题呢？,好了，我们想回过来然后,和第一次一样看看这个问题。

麻省理工公开课 - 计算机科学及编程导论课程节选

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