The brain finds it best to keep smell receptors 19 for unfamiliar and emergency signals 20 the smell of smoke, which might indicate the danger of fire.

大脑发现最好使嗅觉感受器(19)用于保持对不熟悉和紧急事件信号的敏感，(20)比如烟的气味，这可能表明了火灾的危险。

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But the system of economic public interest litigation emerged in the late of 19 century and at the beginning of 20 century on the basis of the emergency of economic law.

而经济公益诉讼制度则是以十九世纪末二十世纪初经济法的产生为契机而出现的。

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The Chelsea manager has even considered asking 19-goal striker Didier Drogba to step into the role on an emergency basis.

穆帅甚至考虑过，在紧急情况下，把已攻入19球的前锋德罗巴安排在中卫位置上应急。

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Emergency services in western Poland have rescued 19 miners who were trapped underground when a minor earthquake caused a tunnel to collapse.

BBC: Poland miners: 19 rescued after earthquake

Prior to that, Asim served as the Director of Community Affairs at the Medical Center, where he directed the operations for South Side Healthcare Collaborative, a partnership of 19 community health centers and the Emergency Department.

WHITEHOUSE: Asim Mishra

Held under Egypt's 19-year-old state of emergency, Mr Ibrahim is yet to be formally charged.

ECONOMIST: Egypt