单词：come in on sth
参加, 加入
come in on sth的用法和样例：
例句
- Please come to our English evening on Saturday.请参加我们星期六的英语晚会。
- We will partake in the celebration.我们将参加庆典。
- They tried to get a foot in the door.他们试图加入进来。
- Then fold in the rest of the sugar and flavouring.然后加入剩下的糖和香料。