A pupil experiences a three-dimensional rolling loop at Binzhou Science and Technology Museum in Binzhou, east China's Shandong Province, Sept. 19, 2020. The 16th National Science Popularization Day kicked off on Saturday. Activities to popularize science started Saturday across the country and will last until Sept. 25. (Photo by Chen Bin/Xinhua)
Sixteenth National Science Popularization Day kicks off
Source: Xinhua| 2020-09-19 20:28:22|Editor: huaxia