国产一级免费电影,国产自产在线视频一区,国产一区亚洲,久久国产精品视频,日本美女天天操b,九色激情,成年轻人网站色直接看

Various activities held across China to greet annual day for science popularization

Source: Xinhua| 2018-09-15 21:02:44|Editor: mmm
Video PlayerClose

CHINA-SCIENCE POPULARIZATION-ACTIVITY (CN)

Citizens watch robot dancing performance during a science popularization activity in Kunming, southwest China's Yunnan Province, Sept. 15, 2018. A variety of activities were held across the country to greet the annual day for science popularization in China. (Xinhua/Hu Chao)

   Prev 1 2 3 4 5 6 7 8 9 Next  

KEY WORDS: science
EXPLORE XINHUANET
010020070750000000000000011100001374702441