Lastly, the screw is typically a circular, cylindrical shaft that looks like, well...a screw.

最后，螺丝通常是指环形的圆柱形轴，看起就像… … 一个螺丝。

This invention, crafted meticulously with a coiling helical surface around a cylindrical shaft, transformed irrigation, a boon to the agrarian societies of the time, and even today.

这项发明以围绕圆柱轴的盘绕螺旋面精心制作，改变了灌溉方式，为当时乃至今天的农业社会带来了福音。