摘 要: | 正"The 65 countries within the‘BeltRoad’regions are facing some common challenges,"introduced Prof.GUO Huadong,Member of both CAS(the Chinese Academy of Sciences)and TWAS(the World Academy of Sciences for the advancement of science in developing countries),at the opening of the"International Symposium on Earth Observation for One Belt and One Road(EOBAR)".GUO welcomed the delegates on May 16 as
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