He invented a clamping mechanism, when the ropes used to hold up an elevator went slacked, his clamps would grip the elevator's guide rails, keeping it from crashing down.
他发明了一种夹紧机构,当用来支撑电梯的绳索松弛时, 他的夹子会夹住电梯的导轨, 防止电梯坠落。
单词 | rail guide |
释义 |
rail guide
原声例句
CNN 10 学生英语 2017年5月合集 He invented a clamping mechanism, when the ropes used to hold up an elevator went slacked, his clamps would grip the elevator's guide rails, keeping it from crashing down. 他发明了一种夹紧机构,当用来支撑电梯的绳索松弛时, 他的夹子会夹住电梯的导轨, 防止电梯坠落。 |
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