词典释义：
(of a structure)fall down or in; give way
（建筑）倒塌；塌陷
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the roof collapsed on top of me .屋顶就在我头上塌了下来。
[with obj.]cause (something) to fall in or give way
使倒塌；使塌陷
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it feels as if the slightest pressure would collapse it 它给人以一种轻轻一碰就会倒塌的感觉
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figurative 〈喻〉many people tend to collapse the distinction between the two concepts .许多人倾向于消除这两种观念之间的差别。
(of a lung or blood vessel)fall inwards and become flat and empty
（肺，血管）萎陷
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[as adj.
collapsed ]a collapsed lung .一叶已萎陷的肺。
[with obj.]cause (a lung or blood vessel) to do this
使（肺，血管）萎陷。
(of a person)fall down and become unconscious, typically through illness or injury
（尤指因生病或受伤而）昏倒
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he collapsed from loss of blood .他因失血而昏倒。
sit or lie down as a result of exhaustion or amusement
（因疲劳或为逗乐而）霍地坐下（或躺下）
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exhausted, he collapsed on the bed 他累得一下子瘫坐在床上
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the three of them collapsed with laughter . 他们三人笑得前俯后仰。
(of an institution or undertaking)fail suddenly and completely
（机构、事业或行动）突然失败；崩溃；倒闭
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in the face of such resolve his opposition finally collapsed .面对如此坚定的决心，他无力对抗，终于败北。
(of a price or currency)drop suddenly in value
（价格）突然下跌；（货币）突然贬值。
fold or be foldable into a small space
折叠（起来）
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[no obj.]
some cots collapse down to fit into a bag or holdall .有些帆布床可以折叠起来，放进袋子或轻便旅行袋里。
[with obj.]compress a displayed part of (a spreadsheet or other electronic document)
重叠，套缩（空白表格程序或其他电子文档）的显示部分
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tabulation programs can be used to collapse this list in various ways. 制表程序可用于以各种方式套缩这份列表。
an instance of a structure falling down or in
倒塌；塌陷
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the collapse of a railway bridge 一座铁路桥梁的倒塌
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[mass noun]
the church roof is in danger of collapse .这座教堂的屋顶有倒塌的危险。
a sudden failure of an institution or undertaking
突然倒闭；崩溃；瓦解
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the collapse of modern society .现代社会的崩溃。
a physical or mental breakdown
（身体或精神上的）崩溃；垮掉
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he suffered a collapse from overwork 他因过度操劳而病倒
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[mass noun]
she's lying there in a state of collapse .她躺在那儿，处于崩溃状态。
"early 17th cent. （as
