Karst cave, an important component of karst geomorphology, is formed by geological agent corrosion, erosion and collapse.

喀斯特洞穴是喀斯特地貌的重要组成部分，在地质营力溶蚀，侵蚀和崩塌作用下形成。

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Structure reinforcement can improve the blast resistance of concrete component and reduce the risk of continuous collapse and blasting fragments of building caused by terrorist actions.

通过结构加固可提高钢筋混凝土构件的抗爆性能，减少由于爆炸恐怖活动造成的建筑物连续倒塌以及建筑物的爆炸碎片的危险性。

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Fatigue failure of metal structural component is a common form of structure collapse, so improving fatigue behavior of metal materials is very important for their usage.

金属构件的疲劳失效是一种常见的结构破坏形式，改善金属材料的疲劳性能对其使用性能的提高有重要意义。

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Fraud was a material part of the mortgage collapse, a big factor in commercial property and loan losses and a component in investment banking and private-equity losses that did more damage than acknowledged.

ECONOMIST: Letters

While many of us see this activity as just the early stages of what will become a long-term, sustainable component of the New York economy, some veteran observers are already forecasting the collapse of another tech bubble.

FORBES: Why 2013 Will Be a Big Year for NYC's Tech Startups!