sit in on (a meeting/a class) 旁聽

說明:

sit in 指「參加」、「出席」、「觀察」,後接 on (an event)。其相反詞是 sit out (a game)。所以「休憩處」就是 sitting-out area。

例子:

Qualified members can sit in on Tom's lessons.


by Thomas Shum