Bireactant
双元推进剂, 二元反应物, 双反应物
🗣️ 情景例句
Me, too.
我也是。
I'm sorry. I was just playing football with my friends.
对不起，我只是和朋友去踢了足球。
Oh, at the end some songs that everyone's familiar with, then they can join in.
哦，终场时奏一些大家都熟悉的歌曲，那样，他们都能参加。