Polycations
(polycation 的复数) 聚阳离子
🗣️ 情景例句
Do you know how to play charades?
你们会打哑谜吗？
How awful.
多可怕呀！
there is no evidence that the total amount of activity is any less.
但没有迹象表明，其活动总量有任何减少。