名词
中文翻译：倒塌的线
同义词：
['collapse line', 'collapse wire', 'collapse cable']
例句：
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1. The old building's roof has collapsed completely.
这座旧建筑的屋顶已经完全坍塌了。
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2. The power line is too weak to support the weight of the tree.
这条电线太弱，无法支撑树木的重量。
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3.The engineer carefully measured the distance between the two lines before making any repairs.
工程师在做出任何修理之前，仔细测量了两条线路之间的距离。