Bivacancy
(在原子外壳中的)双空位
🗣️ 情景例句
Birds are good pets, they can wake you up by singing in the morning.
鸟是很好的宠物，它们早上的歌声可以将你从梦中唤醒。
That'll put us both in the picture.
这样双方都能了解全面的情况。
That's very good advice!
这是极好的忠告啊！