in on

短语

参加, 参与

释义与例句

prep.
  1. 1.

    Being or made privy to, a participant in, involved in, included in, or informed of (usually something private or secret, especially a plan or plot).

    （私下）知情

    习语

    She was in on the surprise from the beginning.

    He didn't hold the gun, but he got in on the robbery after he overheard some of us talking.

词源

Extracted from let in on.

来源：wiktionary