He gripped the wheel until his knuckles whitened.

他紧紧握住方向盘，握得指关节都变白了。

《牛津词典》

Brenda's knuckles were white as she gripped the arms of the chair.

布伦达紧紧抓着椅子的两个扶手时指关节白了。

《柯林斯英汉双解大词典》

If they broke down in their make-believe he rapped them on the knuckles.

如果他们在假装的时候半途而废了，他就会敲他们的指关节。

youdao

I know you're bugged by my bad humor, but too bad. Maybe you're bugged by this, saying wait a minute, how does this thing stop? This is the kind of definition that your high school geometry teacher would have rapped your knuckles over.

我也知道你可能觉得我的冷笑话很烦，但是很不幸，可能你会觉得这个很烦,你会想等等,这个程序怎么停下来呢？,这就是你们高中几何。

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Or just clench your jaw and hang on with white knuckles in terrified silence.

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Levee piano players "professors, " they were called cracked their knuckles before plucking out the hiccupped notes of ragtime.

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The Liberian president reportedly chided Knuckles, a married father, but said he had done nothing illegal.

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