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xing dong shi ke ren lei zai wei ji zhong de zi wo zheng jiu
Author(s): 
Pages: 11-16
Year: Issue:  12
Journal: Ocean World

Abstract: <正>现在还不算太晚——但也差不多了。人类已经向大气中排放了5千亿吨二氧化碳,并且每年至少还要再排放90亿吨——这些碳成为地球沉重的负担。按照目前的趋势,在2050年之前,人类向大气排放的二氧化碳量将达到一万亿吨,足够将地球推入危险地带。
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