drill, 操練

This photo taken on May 27, 2016 shows riot police performing a drill during a 100-day countdown launch event for the Group of 20 (G20) 2016 summit at Yiwu Meihu Sports Center in Yiwu, east China's Zhejiang province. The city of Hangzhou is already eager for the annual event to begin and hopes are high that China's leadership of the group will breathe fresh life into the quest for the elusive global recovery, Chinese state media said on May 28. (Photo by AFP Photo/Stringer)
The Day in Photos – May 31, 2016

http://avax.news/fact/The_Day_in_Photos_May_31_2016.html

drill是什么意思_drill的翻译_音标_读音_用法_例句_爱词霸在线词典

n.操练; 钻头; 军事训练; （应对紧急情况的）演习  vt.& vi.钻（孔）; 打（眼）; 操练; 训练

vt.  作…演习，操练