Polyampholyte
聚两性电解质
🗣️ 情景例句
Anytime.
随时找我。
Deliberate before you begin, then execute with vigour.
著手前要深思熟虑，执行要果断有力。
It's often cold in November and it rains sometimes.
11月常常就冷了，而且有时下雨。