down escalator造句

• You clear your ears prior to stepping on a down escalator
  你在乘坐下降的扶梯前做耳压平衡。
• I was shopping at a department store and had just boarded the down escalator when i noticed a woman standing to the side
  我到一家百货商店买东西，就在我踏上自动扶梯刚要下楼时，突然注意到扶梯边站着一位妇女。