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共78条，第1-20条
EurekAlert 314 Science Daily 157 EurekAlert! 55
EurekAlert! - Earth 53 US Environmental Pro 24 Commonwealth Scienti 15
Climate News Network 12 Science 12 Eco-Business Researc 10
Scientific American 10 us environmental pro 10 United Nations Envir 9
National Centers for 8 World Resources Inst 8 WEF Stormwater Repor 7
National Oceanograph 6 NewScientist 6 World Wide Fund for 6
NASA Global Climate 5 United States Depart 5