Collogen
[医] 胶原
🗣️ 情景例句
May I speak with Mr. Chen, please?
可以请陈先生听电话吗？
Nothing gives me more pleasure than learning English.
再也没有什么比学英语更让我高兴的事了。
He's younger and stronger than you are.
他比你年轻，比你强壮。