What went through Tom's mind I can't imagine, but he did manage to keep a straight face.

汤姆心里在想什么我想像不出来，但是他确实装着一脸严肃。

《柯林斯英汉双解大词典》

We often keep a straight face or use an unsmiling expression when we're making a joke.

当我们开玩笑的时候，我们经常绷着脸或使用不笑的表情。

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He kept a straight face and remained speechless.

他绷着脸不说话。

《新英汉大辞典》

The climb is straight up the face of a rock wall.

VOA: special.2009.01.07

That permits people to cite it as a model with a straight face eight decades after it was enacted?

让人们引以为典范,以严肃的态度认为,即使这个新政已是八十年前的事情了？

斯坦福公开课 - 经济学课程节选

Quite how anyone could suggest this with a straight face I am not sure.

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With a straight face they say that having to provide ID would discourage low-income and minority voters.

FORBES: Fact and Comment

Can they with a straight face defend the reality that troops in 175 countries watched Notre Dame vs.

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