Polyanion
聚阴离子
🗣️ 情景例句
Right now, we should clean up this room.
现在， 我们应当清理一下房间。
No, man. You're the one who blew it.
不，老兄，你才是败事的一个。
What are you doing on Saturday evening?
你星期六晚上要干什么？