Escalators are moving steps. They help people go up or down easily. They are in busy places. On most escalators, two people can stand or walk on one step.
手扶梯是一種移動式的樓梯，讓人們很容易地上下樓，手扶梯會在繁忙的地方，一般來說，可以讓兩個人同時站在左右兩側。
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