Apud
胺前体摄取与脱羧
🗣️ 情景例句
Shall I tell him you called?
我告诉他你来过电话，好吗？
Your shoe lace is loose.
你的鞋带松了。
I'm sorry, but this week isn't very convenient for me.
对不起，这个星期我都不方便。