用英语学英语口语：电梯(elevator)和自动扶梯(escalator)的区别？
Elevator用中文学叫“电梯”，escalator叫“自动扶梯”。
然而，我们对elevator和escalator的学习仅仅停留在用中文知道它们的意思和会说一些实用口语，比如：Let's take the elevator, or Let's go upstairs on the secalator吗？
我们还要具备用英语表达What's the difference between an ekevatir and an escaltor？的语言能力，用英语学英语，用英语积累英语，我们就可以过得更多的英语。
UTalk,自己跟自己说英语：
1. Well both the elevator and the escalator are machines to carry, or take people, or goods from one floor to another floor in a building, like a supermarket, or an office building,or a hotel.
2. An elevator goes up and goes down upright(垂直地) and carries people from one floor to another floor.
From one floor to another floor是很实用的英语口语短语。
3. But an escalator is a set of moving stairs(移动的台阶，这是表达escalator重要词汇)instead of stationary stairs(固定台阶) that moves/goes only between two floors.
用英语学英语让上面我们学过或没学过的实用英语发生“横向关联”，从而获得更多英语。
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