They have become one of the biggest threats to human beings.

环境问题已经成为人类的最大威胁之一。

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Animals are clearly one of the biggest threats to borderline security.

对于边境安检而言，动物显然是最大的威胁之一。

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This is one of the biggest threats to sustaining high economic growth.

这是影响其经济增长持续性的最大威胁之一。

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That said, one of the biggest threats to gas supply is lower oil prices.

FORBES: My Prediction Was Wrong: Why We Didn't Get To $8 Natural Gas

Public disenchantment brought on by corruption is one of the biggest threats to that cause.

ECONOMIST: The issue that could undermine the government

That universality is one of the biggest threats the Church poses to oppressive regimes fearful of their survival.

WSJ: Meghan Clyne: A Japanese Lesson About China for the Pope