Polyampholyte
聚两性电解质
🗣️ 情景例句
Yes, most of them are, except for the plastic parts.
对，除了塑料制品其他都是。
Put (or Lay or Set) one's shoulder to the wheel.
出一把力。
She got very angry and started shouting at me.
她气极了，冲我大喊。