Orthodentin
[医] 直型牙本质, 正牙质
🗣️ 情景例句
I'm sorry, I don't really understand.
对不起，我真的听不懂。
He plays violin just for enjoyment.
他拉小提琴只是为了自娱自乐。
Use your head a little, sir!
请用你的脑袋想一想，先生。