Bivacancy
(在原子外壳中的)双空位
🗣️ 情景例句
Sam, this is Susan. Sam
我是Susan。
Me too. I was hoping we could eat here tonight, but it looks like that's out of the question.
我也这么想。我原本希望我们能在这儿吃晚饭，但现在看来是不成了。
When did you come to China?
你什么时候来到中国？