We all know that cheating on our taxes is a no-no.

我们都知道偷税漏税是绝对不行的。

《柯林斯英汉双解大词典》

I'd found Philippe was cheating on me and I was angry and hurt.

我发现菲利普对我不忠，我很愤怒并且受到了伤害。

《柯林斯英汉双解大词典》

Their job is to check that none of the signatory countries is cheating on the agreement.

他们的工作是检查以确认没有任一签署国违背该协议。

《柯林斯英汉双解大词典》

In schools, the punishment for cheating could be a failing grade on the paper or in the course.

VOA: special.2009.04.16

You hear from other people that she's cheating on him.

你从其他人口中得知这女孩背地里对他不忠。

The thing is 课堂 - SpeakingMax英语口语达人

On the other hand, in 1984, Gary Hart was accused of cheating on his wife.

FORBES: Commentary

But people cheating on their spouses are not the only ones to frequent telos.

BBC: Argentina's discreet way with sex

Over 120 students were implicated for cheating on an exam in an introductory government class last spring.

BBC: Harvard University file picture