footstep和footprint的区别

footstep ['fut'step]
n.
1.the sound of a step of someone walking 脚步声
例句：he heard footsteps on the porch
2.the distance covered by a step
footprint ['futprint]
n.
1.a mark of a foot or shoe on a surface 脚印
例句：the police made casts of the footprints in the soft earth outside the window
2.a trace suggesting that something was once present or felt or otherwise important足迹（表明之前有人来过,或者表示很重要的,类似于milestone的意思）
例句：the footprints of an earlier civilization
3.the area taken up by some object所占用的空间,这个不常用
有用希望采纳哦,thx~