v (1)(使)倒塌((cause to) break into pieces or fall down or inward suddenly)[I，T+n]：(roof)～under the weight of snow(房顶)在雪的重压下塌陷了;(bridge)～under the weight of the traffic(桥)在往来车辆的重负下坍塌了;(barriers)～under the weight of the people(障碍物)在人们的压力下倒塌了;(earthquake) cause many buildings to～(地震)使许多建筑物倒塌了;(wind) cause many tents to～(风)刮倒了许多帐篷;The weight of snow～d the roof.雪把屋顶压塌了。〖同〗fall，cave in;〖反〗stand;

(2)病(累)倒，垮((of a person) fall down (usu in a state of unconsciousness)because of illness，tiredness，shock，etc)[I，I+prep]：The man～d in the street/a heap.那人昏倒在街上/瘫作一团。～with a heart attack/from smoke inhalation/from overwork/from undernourishment因为心脏病发作/烟熏/过度劳累/营养不良倒下;～on hearing the bad news听到那坏消息就瘫倒了;〖反〗 recover;

(3)崩溃，垮台(掉)(break down or fail suddenly and completely)[I]：(health)～under the pressure of work(身体)由于工作的重压而垮掉;(the accused's defence)～under the lawyer's careful questioning(被告的辩护)在律师的细心质问下站不住脚;(enterprise)～through lack of support(企业)因缺少后盾而倒闭;The talks (between the two countries)/negotiations～d.(两国间的)对话/谈判破裂了。The Empire/monarchy has～d. 帝国/君主政体解体了。The huge army/project has～d.庞大的军队崩溃了/规划落空了。All our hopes/plans have～d.我们所有的希望/计划落空了。All opposition to the government/to the scheme has～d.对政府/计划的所有反对势力都垮台了。〖同〗break down，fall;〖反〗succeed，triumph，flourish;

(4)(价格，货币)暴跌((of prices，currencies，etc)suddenly decrease in value)[I]：Share prices～d that week.那个星期股票价格暴跌。

(5)(使)折叠((cause to) fold together so as to take up less space)[I，T+n]：This table(chair/bed/cot/bicycle)～s/can be～d(very easily).这桌子(椅子/床/行军床/自行车)(很容易)折叠。～a table/a chair/a tent把桌子/椅子/帐篷折叠起来;

(6)(使肺、血管)萎陷((of a lung or blood vessel)(cause to) become a flattened mass)[I，T+n]：Her left lung seems to have～d.她的左肺好像萎陷了。～sb's right lung to save his life让右肺萎陷以救他的命;a～d lung萎陷了的肺;

(7)精练，压缩(reduce to the main points;present briefly)[T+n]：Her resume can be～d into a few sentences.她的履历可以压缩成几句话。

→col′lapsible adj 可折叠的;

n(1)倒(塌)((example of) sudden act of breaking into pieces or falling down or inward)[U，a～]：The～of a building/a house/a bridge/a roof/a chimney was due to the sudden storm.建筑物/房子/桥/房顶/烟囱的倒塌是那场突如其来的暴风雨造成的。〖同〗fall;

(2)病(累)倒，垮((example of) sudden failure of one's body or mind)[U，a～]： have a nervous～from working too hard由于劳累神经崩溃;suffer from a nervous～患精神崩溃症;bring on sb's～使某人垮台;He was in a state of～/on the verge of a complete～.他处于崩溃状态/濒于崩溃。〖同〗breakdown，fall，faint;

(3)崩溃，垮台((example of the) act of breaking down or falling suddenly and completely)[U，a～]：the～of sb's health/sb's scheme/the government /the companies/the empire/the negotiations/the law and order某人的身体垮了/某人计划的落空/政府的倒台/公司的倒闭/帝国的解体/谈判的破裂/法制的崩溃;deepen the economic～加剧了经济的崩溃;(economy) be in a state of～(经济)处于崩溃的状态;a company on the verge of～濒于垮台的公司;〖同〗breakdown，failure;

(4)暴跌(sudden decrease in value)[U，a～]：the～of share prices/the dollar/the market股票价格/美元/行情暴跌;cause the pound's～致使英镑暴跌