idiom

n. 成语,惯用语

To my knowledge, there is no such idiom in English.

据我所知, 英文里并没有这样的成语。

A word, a phrase, or an idiom peculiar to the English language, especially as spoken in England; a Briticism.

英国习语，英国特有用词，英国式的语言现象英语，尤其是在英语口语中所特有的单词、短语或习惯用语；英国式语言现象