K-b
[医][=key-board]键盘，开关板，按纽
🗣️ 情景例句
You messed up.
你办砸了。
There is a mole under the ground.
地下有一只鼹鼠。
and we know something of the great variety of the sea bed's topography.
而且我们对海底地形的千变万化也有了一定的了解。