vi.

1. 倒塌
   Having been neglected for years, the house collapsed.

   这所房子因年久失修而倒塌了。

2. 崩溃，瓦解；（价格）暴跌；（计划等）突然失败
   Their project collapsed for lack of money.

   他们的计划因缺钱而告失败。

3. （健康等）垮掉；衰退；累倒
   His health collapsed because of overwork.

   他的身体因工作过度而垮掉了。

4. 折叠起来
5. （肺、血管等的）萎陷；虚脱

vt.

1. 使倒塌；使崩溃
   The weight of snow collapsed the roof.

   积雪的重压使屋顶倒塌了。

2. 使瘪掉；使萎陷
3. 折叠
   He collapsed the wheelchair and put it on the boat.

   他将轮椅折叠起来放在船上。

n.

1. 倒塌；崩溃[U]
   The collapse of the building caused no casualties.

   建筑倒塌没有造成伤亡。

2. 突然失败[U][C]
3. 暴跌[U]
4. （健康等的）衰竭，垮掉[U][C]
   The collapse of his health was brought on by undernourishment.

   他的健康恶化是由营养不足造成的。

5. 虚脱；萎陷[U][C]

v.

1. (of a structure) suddenly fall down or give way.
   ▸ [usu. as adj. collapsed] (of a lung or blood vessel) fall inwards and become flat and empty.
2. fall down as a result of illness or injury.
3. fail suddenly and completely.

n.

1. an instance of a structure collapsing.
2. a sudden failure or breakdown.