Monoid
[计] 独异点; 类群
🗣️ 情景例句
Nobody displayed any interest.
没人显得感兴趣。
I bought 7 boxes of matches.
我买了七盒火柴。
Just a minute, please. I'm sorry, he's not here right now. Can I ask who's calling?
请稍等。对不起，他现在不在这儿。请问你是哪位？