Keyer
n. 键控器\\n[计] 键控器
🏥 医学释义
键控器，定时器
🗣️ 情景例句
I was teaching music,
我当时教音乐，
It is madness for a sheep to treat of peace with a wolf.
跟狼讲和平，此羊必癫狂。
who rolled balls down inclined planes,
他就是那个使球体沿斜面向下滚动，