n.

1. 腳步，腳步聲[C]
   Presently her footfalls died out as she descended to the lower floors.

   當她下到下一層樓時，她的腳步聲不久就消失了。

n.

1. the sound of a footstep or footsteps.
2. the number of people entering a shop or shopping area in a given time.