他的古怪行为一定事出有因。

There has to be a reason for his strange behaviour.

《牛津词典》

他们对他的行为不屑一顾。

They looked on his behaviour with contempt.

《牛津词典》

这是一种残忍邪恶的行为。

This was a fiendish act of wickedness.

《柯林斯英汉双解大词典》

But it's not because of some magical property in the fruit itself, but because of the action of disobedience itself.

但并不是因为苹果本身拥有的魔力，而是因为叛逆这一行为本身。

耶鲁公开课 - 旧约导论课程节选

which is something that the state, the government apparatus should not be a part of.

那是任何州以及政府的有关机构都不能纵容的一种行为。

反对体罚 - SpeakingMax英语口语达人

And the claim is that when you choose this, in order to justify your decision, you denigrate the one you didn't choose.

对这个行为的解释是，当你选这一粒时，为了表明你的选择是正确的，你会贬低第一次没选上的那粒。

耶鲁公开课 - 心理学导论课程节选