Recent empirical research has concentrated on the causes of the famine, taking food shortage as a given.
近来来的研究工作主要集中引起饥荒的原因上，如事物短缺。
This article analyse the main causes of famine taken place in the undeveloped countries in Africa and raises the methods to be carried out both at present and in the future.
本文分析了非洲不发达国家发生饥荒的几个主要原因，并提出了当前及其今后解决的主要途径。
There are some root causes for the floating population in the early years of the Qing dynasty. They are the annexation of land by the landlord class, famine and the ravages of war.
清初流民潮有着深刻的社会根源，即地主阶级兼并土地、灾荒饥馑与兵燹。
At the present moment large parts of the world are faced with the threat of famine, but although natural causes have contributed to the situation, the principal causes are human.
目前，世界的大部分地区都面临着饥荒的威胁，然而，尽管这种情况部分是由天灾所引起，但主因还是人祸。
At the present moment large parts of the world are faced with the threat of famine, but although natural causes have contributed to the situation, the principal causes are human.
目前，世界的大部分地区都面临着饥荒的威胁，然而，尽管这种情况部分是由天灾所引起，但主因还是人祸。
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