You must have done something heroic either before or after that. Remember carefully.

在那前后,你一定做了什么英勇的事, 你细心想想看.

辞典例句

Maria: ( singing ) So somewhere in my youth or childhood, I must have done something good.

玛丽亚: ( 唱 ) 所以在我的童年或是少年时, 我一定是做了好事.

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Oh , with all that I've done wrongI must have done something right.

我知道我做错了很多,但我也一定做对不少.

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I must have done something, he said sorrowfully.

“我一定做了什么事, ”他伤心地说.

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They must have done it!

这件事一定是他们干的.

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He must have done it.

他一定已经把这事做了.

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You must have done a lot of research on your topic, haven't you ?

你对你的课题一定做过很多研究 吧 ?

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So somewhere in my youth or childhood, I must have done something good.

所以在我的童年或是少年时, 我一定是做了好事.

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Mr. A must have done something terrible because he has a hangdog look today.

先生一定做了什麽大错事,因为他今天有羞愧的脸色.

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