Polyampholyte
聚两性电解质
🗣️ 情景例句
I haven't dated any one else since her mother died.
自从她母亲去世之后 我从没有和别人约会过。
I've heard so much about you!
久仰大名！
He investigates complaints large and small that come to him from all levels of society.
他听取社会各阶层的各种大小意见，并进行调查。