名词

1. 自动扶梯
[…]nbsp;[…]nbsp;[…]nbsp;[…]nbsp;An escalator is a moving staircase on which people can go from one level of a building to another.

1. a stairway whose steps move continuously on a circulating belt

[…]nbsp;[…]nbsp;[…]nbsp;[…]nbsp;Synonym: moving staircasemoving stairway

2. 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)

[…]nbsp;[…]nbsp;[…]nbsp;[…]nbsp;Synonym: escalator clause