Odontoperiosteum
[医] 牙周膜
🗣️ 情景例句
but they probably had other things on their minds.
但他们也许还有其他的事想要做。
How old do you have to be to vote in the national elections?
你要多大才能在大选中投票？
I'm glad our negotiation has come to a successful conclusion.
我很高兴这次洽谈圆满成功。