When all of these axes are used in conjunction with each other, extremely complicated geometries, even organic geometries such as a human head can be made with relative ease with these machines.这句话的意思是当这些轴在使用时相互排斥,非常复杂的几何形状,比如说人脑这样的器官形状,对这样的机器来说,加工起来也是很麻烦的。