Periost
[医] 骨膜
🗣️ 情景例句
Advice doesn't normally come cheap, but this piece is for free...
通常来说，忠告都是价值不菲的，但这个是免费赠送的。。。
Don't forget to put stamps on the letter.
不要忘记在信封上贴邮票。
She was the brave one, not I.
她是个勇敢的人，而我可不是。