七十年代末，世界粮食储备重新建立。
During the late seventies world grain reserves were rebuilt.
世界粮食储备也跌至上世纪70年代以来的最低点。
They have also left the world's stockpiles at their lowest since the 1970s.
这些因素同世界粮食储备的持续下降一道推动了这次食物价格在世界范围内的大幅度上涨。
These factors, coupled with falling world food stockpiles have all contributed to the dramatic worldwide rise in food prices.
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