ㄓㄨㄛㄐㄧㄢzhuōjiān

捉奸
  1. 當場捉拿正在通姦 捉姦」、氣沖沖地帶警員進入賓館捉姦」。

to catch a couple in the act (adultery, illicit sexual relations)​
surprendre un couple dans des relations sexuelles illicites