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共116条,第1-20条
EurekAlert 437 Science X network 350 Science Daily 198
EurekAlert! - Earth 120 EurekAlert! 110 Natural Environment 31
Department of Conser 23 Environmental Monito 20 Government of Canada 20
US Department of Ene 20 European Space Agenc 19 Scripps Institution 19
Imperial College Lon 16 World Wide Fund for 16 Plymouth Marine Labo 15
US National Scientif 15 gov.uk-Department fo 15 United Nations Envir 14
World Resources Inst 14 Department for Envir 13