change footfall换步
growth footfall生长阶
substantial footfall实质办法
abundant footfall实质办法
disarea footfall位错阶梯
fire footfall射击踏台
procedure footfall程序步骤
adroit footfall独创性
footfall stool梯凳
N-COUNT（可数名词） A footfall is the sound that is made by someone walking each time they take a step. 脚步声 [文学性]
She heard the priest's familiar, flat footfall on the staircase.
她听到楼梯上传来牧师那熟悉而沉闷的脚步声。