Periost
[医] 骨膜
🗣️ 情景例句
How much time will it take for my mail to get to where it is going?
我的信件到达它要去的地方要用多少时间？
Well, to tell the truth, I was a little disappointed.
说实话，我有点失望。
No, we're American.
不是，我们是美国人。