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共25条，第1-20条
Science X network 505 EurekAlert 263 EurekAlert! - Earth 125
Wetlands Internation 44 SciDev.Net 25 Minerals Council of 23
Commonwealth Scienti 15 Institute for Global 10 CNRS News 8
US National Scientif 8 Centre national de l 7 NewScientist 7
Australian Resources 6 Mining Association o 6 world meteorological 6
Minging.com 5 European Space Agenc 3 World Meteorological 3
Center for Strategic 2 Organization for Eco 2