众所周知,宇宙中所有物体都在不停地做机械运动.例如,奔驰的车辆、运转的机器、飞行的飞机等,即使通常所说静止的高楼大厦、广阔田野等也都随地球一起自转和公转……总之机械运动是普遍存在的,所以就机械运动本身来说是绝对的.但在描述一个物体 As we all know, all objects in the universe are constantly making mechanical movements. For example, Mercedes-Benz vehicles, operating machines, flying aircraft, etc. Even the so-called stationary high-rise buildings, vast fields, etc., all rotate and revolve with the Earth. ... In short, mechanical movement is ubiquitous, so it is absolute in terms of mechanical movement itself. But in describing an object