Polyampholyte
聚两性电解质
🗣️ 情景例句
Pretty good, but I got caught in a traffic jam in Beijing.
很好，不过在北京碰上了交通阻塞。
I'm sorry. I thought you wouldn't mind.
对不起，我还以为你不在乎呢。
I think I've caught a cold.
我想我得了感冒。