Irina Bokova, director-general of the UN Educational, Scientific and Cultural Organization (UNESCO), Song Jian, honorary chairman of presidium of Chinese Academy of Engineering (CAE), Xu Kuangdi, honorary chairman of presidium of CAE, and Zhou Ji, president of CAE, (from L to R, front) attend the signing and unveiling ceremony of the International Knowledge Center for Engineering Sciences and Technology in Beijing, capital of China, June 2, 2014. (Xinhua/Jin Liwang) |
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