cheat on (cheating,cheated,cheats)

• 1.  

  PHRASAL VERB（动词词组） If someone cheats on their husband, wife, or partner, they have a sexual relationship with another person. 不忠实于 (配偶或伴侣) [非正式]

  例：

  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。

• 2.  

  PHRASAL VERB（动词词组） If someone cheats on something such as an agreement or their taxes, they do not do what they should do under a set of rules. 违背 (协议等) [美国英语]

  例：

  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。