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)
同义词：escalator clause
a stairway whose steps move continuously on a circulating belt
同义词：moving staircase, moving stairway
escalator详细解释
es.ca.la.tor n.（名词）A moving stairway consisting of steps attached to a continuously circulating belt.自动扶梯：附着在一个连续循环的带子上的带有台阶的移动楼梯An escalator clause.调整条款，伸缩条款 来源：[Originally a trademark] [早期的一种商标]
