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世界粮食的增长速度已大大落后于人口增长的速度。粮食问题的严重性不仅表现在世界某些地区发生了饥荒,而且还表现在粮食出口国的粮食储备量日益减少。1961年,世界几个粮食出口国的储备量可
The rate of world food growth has lagged far behind that of population growth. The severity of the food problem is not only manifested by famine in some parts of the world, but also by the diminishing grain reserves in food-exporting countries. In 1961, the reserves of several grain exporters in the world were available