He was very famous when I was in graduate school tons and tons of years ago.

我读研究生时他已经非常有名了,多少年前了

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I remember in high school, we saw a famous actress on the sidewalk, and we were very excited.

记得高中时候，我们在人行道上看到一个著名的女演员，我们非常兴奋。

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Could you tell us about one of the famous alumni from your school?

你能给我们介绍一位你们学校有名的校友吗？

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