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。

youdao

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。

youdao

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。

youdao

Yunus spent time with farmers, manual laborers, and village residents to learn the real root causes of the famine.

FORBES: Spend Less Time On Planes And More Time With Worms

Even ex-president Liu once said that the famine was probably 70% man-made and 30% the result of natural causes.

CNN: Trapped By Their Own Lies

Their estimate of the number of people who died from the famine -- on top of those who died as a result of conflict or other causes -- was calculated using a range of information, including mortality surveys and data on food prices and wages.

CNN: Somalia famine killed close to 260,000 people, report says