Polycations
(polycation 的复数) 聚阳离子
🗣️ 情景例句
that you care about us.
关心我们大家。
What's your nationality?Are you a Japanese?
你的国籍是什么？你是日本人？
What invariably happens is that a great number of things choose to go wrong at precisely the same moment.
情况经常是这样的，许许多多的事情都偏偏赶在同一时刻出问题，