Aminothiopropionic acid
[医] 半胱氨酸
🧩 词语组成解析
🗣️ 情景例句
Don't stand on ceremony, make yourself at home.
别客气，随便吃。
How is it going with you?
你过得怎样？
Have we been introduced?
对不起，我们彼此介绍过了吗？