The amount of heat produced by this electrical apparatus is variable by turning a small handle.

这电热器所产生的热量可随着转动小把手而改变。

And then by turning the handle, it will turn into the surgical equivalent of a keyhole surgery hand.

然后转动手柄，它就变成了外科手术中的微创手术手。

It was not until she climbed to the second floor that she thought of turning the handle of a door.

直到爬上二楼，她才想到去转动一扇门的把手。

A fish swimming through the upraised door towards the bait, necessarily strikes one of the small sticks turning the handle, which displacing the stick supporting the door, the latter falls, securing the fish within the frame.

一条鱼穿过升起的门朝鱼饵游去，必然会撞到一根转动手柄的小棍子， 这会取代支撑门的棍子，后者掉落，将鱼固定在框架内。