这项新研究是以华府为根据地的环保团体“地球政策研究所”所做。
The new study comes from the Earth Policy Institute (EPI), a Washington-based environmental group.
但华盛顿地球政策研究所的勒斯特·布朗说对燃料作物的需求会促使粮食价格上涨。
But Lester Brown at the Earth Policy Institute in Washington says demand for fuel crops is pushing up food prices.
世界知名的环境分析家莱斯特•r•布朗是美国地球政策研究所的创办者和所长。
Lester R. Brown is an internationally renowned environmentalist, author of numerous books and the Founding President of the Earth Policy Institute.
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