据推测，到二十一世纪二十年代，我国国民生产所需原材料的来源，将主要依靠开发利用可再生资源。
It is predicted that the raw material needed in the national production of China will mainly rely on the development and utilization of renewable resources by 2020s.
据推测，到二十一世纪二十年代，我国国民生产所需原材料的来源，将主要依靠开发利用可再生资源。
It is predicted that the raw material needed in the national production of China will mainly rely on the development and utilization of renewable resources by 2020s.
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