to crank up
01
用曲柄转动, 摇动曲柄
rotate with a crank
02
摇动手柄启动, 转动操作
to start something by turning a handle or lever
例子
He had to crank up the old car's engine on the cold morning.
他不得不在寒冷的早晨启动那辆旧车的发动机。
The musician cranked up his amplifier before beginning the concert.
音乐家在开始音乐会之前启动了他的放大器。
