According to the range of lower explosive concentration limit, methods for how to set up warning region were research.

通过分析氨气扩散后爆炸浓度下限范围，探讨了如何设置警戒区的方法。

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The Pacific tsunami Warning Center canceled a tsunami alert issued earlier for the region.

太平洋海啸警报中心取消了此前向该地区发布的海啸警报。

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Now researchers have developed a similar-style early warning system for the public health of an entire region.

现在，科学家开发了一种针对整个地区公共健康的简易早期警示系统。

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The six ships had defied a warning from the Israeli navy not to approach the region, and the ships were boarded early Monday by Israeli forces.

VOA: standard.2010.06.03

Secretary Gates said there are some "exaggerated concerns" in the region that a so-called "grand bargain" with Iran will be negotiated in secret and then sprung on the region without warning.

VOA: standard.2009.05.05

ASI, its representatives toured the region warning slave-owners that they would be punished not for owning slaves, but for publicly releasing them.

ECONOMIST: Niger decides not to free its slaves

Equally, last year's flooding of the Mekong river, which devastated large parts of Cambodia, should serve as a warning to the region, says David McCauley, head of the ADB's climate-change programme.

ECONOMIST: The threat grows from rising water and sinking buildings

An initial tsunami warning for the Pacific region was soon canceled.

WSJ: Tsunami Destroys Villages in Solomon Islands