3 篇文章
Three-quarters of the varieties
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Three-quarters of the varieties 农民花费上千年培育出来的

Gave way to the most productive varieties and the easiest to transport.
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Gave way to the most productive varieties and the easiest to transport. 被更高产的变种且方便运输的产物取代

They learned to increase the yield and multiply the number of varieties.
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They learned to increase the yield and multiply the number of varieties. 他们学会了提高产量 种植多样化

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