sit in on
片語動詞所屬單字sit
sit in on — 片語動詞
1. To attend a meeting or class as an observer without participating.
1.片語動詞
釋義
旁聽
To attend a meeting or class as an observer without participating.
例句
The new teacher sat in on a few classes to learn the methods.
I sat in on the board meeting but did not vote.