1. 践踏：5) ,践踏( Trampling) :生态系统中产生空地,为外来种侵入提供有利场所,同时阻碍 原来优势种的生长, (踏青苗)适度的践踏,减缓优势种的生长,可以促进自然生态 系统保持较高的物种丰富度.

2. 踩踏：定向征集targeted solicitation | 踩踏trampling | 磁悬浮车站maglev train station

noun

1. the sound of heavy treading or stomping

e.g. he heard the trample of many feet

Synonym: trample