Mucoitin
粘多糖, 粘液素
🗣️ 情景例句
Do you know that I mean?
知道我的意思吗？
I ate cakes for dinner yesterday.
我昨天晚饭吃的是蛋糕。
I'm sorry I don't know. You'd better ask that policeman over there.
对不起，我不知道。你最好问问那边的警察。