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中国的塞罕坝沙漠曾经黄沙漫漫 经三代人努力建成世界最大人工林 。

fireandwater (笑看苍生)

https://m.youtube.com/watch?v=gNAe8MCffyg#
(#12148084@0)
2019-6-15 -05:00
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