Periost
[医] 骨膜
🗣️ 情景例句
It just depends on a number of things.
这得靠许多因素才能决定。
Winning money is great fun and relaxation.
赚钱是最愉快舒服的事。
Oh ! I must get up. I'm late.
我必须起床了，要迟到了。