An escalator is a moving staircase on which people can go from one level of a building to another.
英汉词典释义
n.
自动扶梯; 电扶梯 ;滚梯
I don’t like escalator—I’ll climb the stairs.我不喜欢自动扶梯, 我要爬楼梯。
英英词典释义
Noun
1. a clause in a contract that provides for an increase or a decrease in wages or prices or benefits etc. depending on certain conditions (as a change in the cost of living index)
2. a stairway whose steps move continuously on a circulating belt