sit in on
柯林斯词典
1. PHRASAL VERB If you sit in on a lesson, meeting, or discussion, you are present while it is taking place but do not take part in it. 列蓆; 旁聽
Will they permit you to sit in on a few classes as an observer?
他們會允許你旁聽幾節課嗎?
返回 sit in on