The more important goal is using interactive learning to discover the cause of the decline and compare it to issues we face today—natural disasters, environmental problems, and war.

更重要的目标是利用互动式学习来发现减少的原因，并将其与我们今天面临的问题——自然灾害、环境问题和战争——进行比较。

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The risk of a mass cholera outbreak is highest when poverty, war or natural disasters force people to live in crowded conditions without adequate sanitation, according to the Mayo Clinic.

大规模霍乱暴发主要原因贫穷，战争和自然灾害，迫使人们生活在拥挤的条件下，没有足够卫生设备。

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Force majeure: Either party shall not be held responsible for failure or delay to perform all or any part of this agreement due to natural disasters, war or any other events of force majeure.

不可抗力：任何一方由于自然灾害、战争或其他不可抗力事件导致的不能履约或延迟履约，该方不负责任。

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Clearly at the top of the hierarchy of guilty landscapes we would find extermination camps, war zones, battlefields and sites of major disasters.

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Soldiers must endure heavy physical demands, from boot camp and basic training to the rigors of duty, which can include not just war but aiding in natural disasters like hurricane Sandy.

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They see their romantic disasters, shown in copious flashbacks, as Hollywood melodramas, their rustic gunplay in terms of war movies, their erotic dreams as musical numbers.

NEWYORKER: Hallelujah the Hills