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免费vnp吧
For small farmers, getting fresh crops to market is a delicate balancing act. With support from J-WAFS, researchers at MIT and in Kenya are working on a storage facility that uses the evaporative cooling properties of water to keep crops fresh longer. Full story
Oct 16, 2020
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免费vnp吧
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免费vnp吧
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免费vnp吧
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免费vnp吧
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免费vnp吧
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免费vnp吧
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免费vnp吧
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坚果加速器怎么样