(noun.) a stairway whose steps move continuously on a circulating belt.
亨廷顿编辑
双语例句
The escalator is a simple device. 佚名.神奇的知识之书.
Another type is that known as the cleat escalator. 佚名.神奇的知识之书.
This new and interesting device is known as an escalator. 佚名.神奇的知识之书.
This simple but effective device is known as the escalator. 佚名.神奇的知识之书.
The Cleat Escalator. 佚名.神奇的知识之书.
Both these types of escalators can be made to move up or down by aid of a swinging switch, or two of them can be placed side by side, one moving upward and the other downward. 佚名.神奇的知识之书.
The Story in Elevators and Escalators[15] 佚名.神奇的知识之书.