Polycations
(polycation 的复数) 聚阳离子
🗣️ 情景例句
You do the same. Well, I'd better go. Thanks again for everything.
你也代我问候一声。好，我得走了，再次谢谢你们的招待。
I'm sorry. I thought you wouldn't mind.
对不起，我还以为你不在乎呢。
Well, I couldn't sleep last night.
啊，我昨晚上没睡好觉。