the impression left by a foot or shoe on the ground or a surface 脚印,足迹
the area covered by something, in particular 覆盖地区,尤指 ■the area beneath an aircraft or a land vehicle which is affected by its noise or weight (飞机或车辆噪音或重量影响所及的)覆盖区 ■the area in which a broadcast signal from a particular source can be received 信号覆盖区 ■the space taken up on a surface by a piece of computer hardware (一个计算机硬件的)台面面积