1960年，中国遇到了严重的粮食短缺问题。
他的研究极大地解决了世界粮食短缺的问题。
His research greatly solved the problem of the food shortage in the world.
为世界粮食短缺问题找到长期技术解决方案的希望似乎很难实现。
The promise of finding long-term technological solutions to the problem of world food shortages seems difficult to fulfill.
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