Polyampholyte
聚两性电解质
🗣️ 情景例句
He got the part simply'cos of his loud voice.
他获得了一次演出的机会仅仅是因为他的声音洪亮。
Happy is the man that owes nothing.
无债一身轻。
Which part of England do you come from?
你从英国的什么地方来？