I regret my bad action.

我悔恨自己的不良行为。

《新英汉大辞典》

You can accuse him of his bad action.

你可以控告他的这种恶劣行为。

youdao

A bad action often cancels a good one.

坏的行为往往把好的行为抵消。

youdao

part of the James Bond action series. One of Dean's starring roles came in the 1990 film, "Big Bad John."

VOA: standard.2010.06.14

I'm going to talk about moral feelings, moral judgments, and then moral action with particular focus on why good people do bad things, which will lead us to review and discuss the Milgram study, which was presented in the movie on Monday.

我会为大家讲解道德情感，道德判断，最后是道德行为,我们会特别讲一下为什么好人会做坏事，借此回顾和讨论米尔格林姆的实验，这个实验我们在星期一的电影中都看过了。

耶鲁公开课 - 心理学导论课程节选

He starred in bad action movies, mediocre dramas, lousy comedies, and bloated Titanic wannabes.

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"This is clearly a bad action, if found guilty, but we believe these issues and penalties will not dramatically impair their balance sheet and its ongoing business model, " especially in the U.S., Janney Capital Markets analyst David Strasser said in a note to investors.

NPR: Wal-Mart Says Loss Likely From Bribery Probe

Talley must invent a compound that gums up the action of bad genes and their proteins.

FORBES: The Chemical Cobbler