This time it was the tractor that averted malthusian disaster .
这次是拖拉机改变了马尔萨斯灾难。
Some countries , such as liberia and niger , are growing faster still , doubling in size in less than 20 years-a stunning increase that is causing forecasts of malthusian disaster for countries that cannot feed themselves .
This is not the first time in modern economic history that the malthusian spectre of global food shortages has stalked the world economy .
马尔萨斯关于全球食品短缺的幽灵追随着世界经济的发展,这在现代经济史上不是第一次。
Finally , the right should beware scorning environmental concerns as nothing but a malthusian conspiracy .
最终,右翼党派应该注意到藐视环境问题只是一种马尔萨斯人口论阴谋。
They are due to double in size in less than 20 years-an increase that is causing forecasts of malthusian disaster for countries that cannot feed themselves .