5月31日,在山东烟台大学附属小学举行的“迎六一科普大篷车进校园”活动中,小学生们进行“异形齿轮啮合转动”实验。当日,各地举行丰富多彩的活动,迎接“六一”儿童节的到来。[新华社 唐克 摄]
Students play with a gear model at a primary school in Yantai, east China's Shandong Province, May 31, 2018. People held various activities to observe the International Children's Day across China. (Xinhua/Tang Ke)
Go to Forum >>0 Comment(s)