1. 活动楼梯：moving staircase 活动楼梯 | moving stairway 活动楼梯 | moving target 活动规标
2. 自动楼梯：moving staircase ==> 自动升降梯 | moving stairway ==> 自动楼梯 | moving stay follow-rest ==> 跟刀架
noun
1. a stairway whose steps move continuously on a circulating belt
Synonym: escalator moving staircase