Polycations
(polycation 的复数) 聚阳离子
🗣️ 情景例句
My favorite snacks are soda, popcorn and potato chips.
我最喜欢的零食是汽水、爆米花和薯片。
He's the same as always.
他还是老样子。
Believe it or not!
信不信由你！