In his book Collapse, Jared Diamond shows how ecological crisis is often the prelude to social catatrosphe(6).

杰拉德·戴蒙德在他的著作《崩溃》中展示了生态危机为什么往往是社会大灾难的前奏(6)。

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The comprehensive realignment of Tarim and Heihe rivers has saved the ecological environment on their lower reaches that was on the brink of collapse.

塔里木河和黑河经综合治理，挽救了濒临崩溃的下游生态环境。

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They're concerned about a global financial collapse, an ecological crisis and potential disruptions in the food supply.

他们担心全球金融崩溃，生态危机和粮食供应的中断。

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To be sure you are marking a fundamental change in human society borders on the impossible--such events happen just a few times a century, and (barring things like ecological collapse) rarely with anyone's ability to see at the time that anything has changed.

FORBES

Even as much of their country prospers, environmental problems are so severe in the impoverished north and west (along the Russian border) that, in tandem with the collapse of state-owned enterprises, they've created at least 100 million economic and ecological refugees.

FORBES: Magazine Article