Development of large collapse structures in karstic terrain requires an interaction between mechanical instability and chemical removal of collapsed rock.

机械的不稳定性和崩塌块石的溶蚀搬运以及二者之间的相互作用是喀斯特区大型塌陷构造的发育条件。

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Instead, many deaths and injuries in earthquakes result from falling objects and the collapse of buildings, Bridges, and other structures.

反而，许多死亡和伤害在地震起因于下落的对象和大厦、桥梁，和其它结构的崩溃。

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Perhaps the idea of “bigger is better” and “you can't take it with you” are now becoming outdated and outmoded ideologies—especially with the near collapse of worldwide financial structures.

也许，“越大就越好”和“今朝有酒今朝醉”之类的想法已经日渐过时——尤其是在全球金融结构近乎瓦解的情况下。

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The result is that subsequent structures collapse at increasingly lower heights and require more effort to build.

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Of those, as many as 2, 500 are deemed dangerous because they may collapse and damage neighboring structures or injure people, Meffert said, and 120 homes -- or what's left of them -- need to be knocked down immediately because they're either in roadways, on sidewalks or on other property.

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Some people think that Nigeria, battered by years of economic decline and the criminalisation of government under military rule, plus a collapse in respect for traditional structures, is on the brink of social breakdown.

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