footprint

footprint
noun
  1. the impression left by a foot or shoe on the ground or a surface
    脚印,足迹
  2. 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
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