As in the sea, it seems that on the land one key food chain collapsed: the one with leaves as its basic raw material.

和在海洋中一样，陆地上一个关键食物链，一个以树叶为基本原料的食物链似乎也崩坏了。

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For the impoverished local residents of Jharia, stealing coal to sell and picking through collapsed buildings for salvageable material is a dangerous way of life.

对于穷困潦倒的加里亚当地居民来说，偷抢煤块和去倒塌建筑里拾荒是十分危险的谋生手段。

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In the shining of material corona, what people gained are plain spirit, collapsed belief, and vain value.

人类在耀眼的物质光环中，收获的是精神平面、信仰坍塌和价值虚无。

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Scientists are eager to examine the asteroids because they formed in the same primordial cloud of gas and stellar material that collapsed to make the sun and the planets about 4.5 billion years ago.

WSJ: Asteroid Vesta Gets a Close Study

When the Western Roman Empire collapsed in the Fifth Century the effect on material culture and technology in Europe was devastating.

FORBES: What Are Examples of Things in the "Common Knowledge" about History That Historians Almost Universally Consider Incorrect?

"Rana Plaza collapsed due to blatant violation of the building code, the use of substandard material and the operation of heavy machinery including generators on the upper floors, " Main Uddin Khandaker, a civil servant who led the panel, said in an interview.

WSJ: Bangladesh Factory Collapse Blamed on Shoddy Materials