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21:43, 31-Aug-2018
A high-tech facility in S. Korea is the world's first indoor vertical farm that has been built in a tunnel. It is seen as a a key to developing sustainable agriculture.
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21:28, 03-Sep-2018
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Copyright © 2018 CGTN. Beijing ICP prepared NO.16065310-3
Copyright © 2018 CGTN. Beijing ICP prepared NO.16065310-3