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。

youdao

Be prepared against war, be prepared against natural disasters, and do everything for the people.

备战备荒为人民。

《新英汉大辞典》

Of all the world’s major ills – such as war, hunger, and natural disasters – none can quite compare to the millions of baby girls and female fetuses killed by parents who prefer boys.

数以百万计的女婴和女胎被重男轻女的父母杀害！ 所有世界上主要的弊病 —— 如战争、饥饿和自然灾害——没有任何一个可以与之相提并论。

youdao

It handles emergencies caused by war, infectious disease and natural disasters.

VOA: special.2010.07.26

For many kids who are threatened by disease, natural disasters and war in places like Somalia, Bangladesh, Myanmar and too many other developing countries, this spare change has meant the difference between thriving and merely surviving, health and illness, even life and death.

CNN: How UNICEF became a Halloween treat

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

FORBES: Guilty Landscapes: Oxford, Ystad, Amsterdam and Sodermalm

Outfits such as the International Crisis Group and Global Witness publish detailed and opinionated reports from places beset by war or other disasters.

ECONOMIST: Sins of the secular missionaries | The