It is impolite to say dirty words.

说脏话是不礼貌的。

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Don't say dirty words in public.

公共场合不要说脏话。

youdao

Dirty words or vulgar words is not allowed.

禁止使用粗俗的字眼或是脏话。

youdao

You have to learn, in other words, how to get your hands dirty. Between the innocence of the Christian and the worldliness of Machiavelli's new morality, there can be no reconciliation.

换句话说，你必须学会如何弄污你的手,在基督教的纯洁观与,马基雅维利新道德中的世俗观之间,没有任何回旋的余地。

耶鲁公开课 - 政治哲学导论课程节选

More than half said using dirty words at work makes an employee appear less intelligent.

FORBES: Dirty Words Can Cost You a Promotion

Though clearly not to everyone's taste, the likes of Peter Cook and Dudley Moore's Derek and Clive sketches and George Carlin's Seven Dirty Words routine have influenced generations of humorists.

BBC: Should swearing be against the law?

He saw things he recognized but his brain, befuddled with chemicals released by fear, couldn't locate the words to describe them: the twin stacks spewing plumes of dirty white smoke, the abandoned custom's station with a faded red star painted above the door, the line of white-washed bee hives on a slope near a copse of stunted apple trees.

NPR: Excerpt: 'Legends'