不过20世纪的重大经济危机也常常引发诸如此类的重大事件，尤其是20世纪30年代那次。

But major economic crises in the 20th century almost always led to those types of major breaks, especially during the 1930s.

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本报告好在它将气候变化作为首要问题，强调必须采取行动避免出现生产总值下降20 %的重大经济危机。

The advantage of this report is that it turns the problem of climate change on its head by asserting the need to act to avoid a major economic crisis (a 20 % drop in production).

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他的新政迅速地为社会保护、调整和控制提供了方法，他的行为成功的保护了一个国家在长达80年的时间里免受巨大经济危机的侵袭。

His New Deal swiftly introduced measures for social protection, regulation and control. His actions succeeded in protecting the nation from major economic crisis for nearly 80 years.

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