It is darned hard to drag something to the exact desired spot, especially when the screen resolution is 72 pixels per inch and the mouse is running at a six-to-one ratio to the screen.

• 要想将一个对象拖动到确切的位置上非常困难，特别是当显示屏的分辨率为每英寸72个像素，而鼠标以6比1的比例在显示屏上移动时。