An escalator is a moving staircase on which people can go from one level of a building to another.
英漢詞典釋義
n.
自動扶梯； 電扶梯 ；滾梯
I don’t like escalator—I’ll climb the stairs.我不喜歡自動扶梯, 我要爬樓梯。
英英詞典釋義
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