Coactions
相互作用
🗣️ 情景例句
Then, in college, I became good at it.
然后， 在大学， 我变得很精于数学。
Your friend was here a week ago,wasn't he?
一个星期前，你的朋友曾在这里，是不是？
Well done! Does that mean that your team is top of the league?
干的好。就是说你们球队是联赛冠军啦？