waterwheels
n. 水车;水轮;吊水机
例句
There was much debate on the relative efficiencies of different types of waterwheels.
关于不同类型水车的相对效率有很多争论。
If time allowed me to come closely to the waterwheels, I would be taken some photos with them.
如果时间允许我与水轮有亲密的的接触,我会拍些相片。
Like waterwheels, windmills were among the original prime movers that replaced human Beings as a source of power.
和水车一样,风车是最早代替人力的动力机之一。