吃透英语课本,提升在校竞争力
n. 自动扶梯;电动扶梯
复数:escalators
Take the escalator to the third floor and it's the last office on the left.
乘电梯到4楼,左边最后的那个办公室就是。
The escalator is broken today.
今天扶梯坏了。