那是很久以前的事了，那时我还在上大学，我知道了一个关于月亮的秘密。
It was a long time ago, when I was still in college, that I found out about the moon.
玛丽：我的哥哥已经工作了，妹妹还在上大学。
Mary: My brother has found his job and my sister is still in college.
玛丽：我的哥哥已经工作了，妹妹还在上大学。
Mary: : my brother has found his job and my sister is still in college.
大约十年以前，当时还在上大学，我在大学自然历史博物馆里面作为实习生而在那里学习工作。
About ten years ago when I was an undergraduate in college, I was working as an intern at my University's Museum of Natural History.
大约十年以前，当时还在上大学，我在大学自然历史博物馆里面作为实习生而在那里学习工作。
About ten years ago when I was an undergraduate in college, I was working as an intern at my University's Museum of Natural History.
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