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[关注社会] 地球资源是否真的即将告罄?
Is the Earth running out of minerals?地球上的矿产资源是否即将告罄？A recent and widely publicized proposal to mine asteroids for nickel, platinum and other key ingredients for metals is based in part2012-07-02 编辑：justxrh
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Filename: libraries/Cache_file.php
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Severity: Warning
Message: Memcache::connect(): Can't connect to 127.0.0.1:11211, Connection refused (111)
Filename: libraries/Cache_file.php
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2012-07-02 编辑：justxrh
