K-b
[医][=key-board]键盘，开关板，按纽
🗣️ 情景例句
Well ... well,
哦……哦
The doctor said it's just a litter heat rash, There's nothing to worry about.
医生说只是出疹子，不需要担心。
It was upon this principle that the first instruments were made,
据这一原理，制造出了最初的地震仪器，