Scala tympani
[医] 鼓阶
🧩 词语组成解析
[医] 阶
n. 定音鼓
🗣️ 情景例句
I would like to send this by registered mail, please.
我想把这封信挂号寄出。
Did you go swimming yesterday?
你昨天去游泳了吗？
I'll introduce him to you.
那么，我来介绍你认识。