We, the human species, are confronting a planetary emergency—a threat to the survival of our civilization that is gathering ominous and destructive potential even as we gather here.

我们人类，正面临着一种全球性的紧急情况——这是对我们文明生存的威胁，正当我们聚集在这里的时候，这种威胁正积聚着不祥的破坏性潜力。

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More companies are learning the importance of destructive technologies—innovations that hold the potential to make a product line, or even an entire business segment, virtually outdated.

越来越多的公司正在意识到变革性技术的重要性，它几乎能令一条产品线、甚至是整个业务部门都因过时而被淘汰。

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However, spending on useless or, even better, destructive projects doesn't present conservatives with the same problem.

不过，在无用的项目，或者最好是在破坏性的项目上开支，并不会给保守派提出同样的问题。

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But competition, even destructive competition, is good for markets, Rock said.

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However, they've also become the target of criticism that they're a destabilizing--or even a destructive force--in the markets as well.

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If Iran acquires nuclear weapons, the situation will become even more destructive.

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