A traffic policewoman with a mask directs the traffic in Jinan, capital of east China's Shandong Province, Jan. 30, 2013. The local traffic policemen used masks to protect their health in hazy days.(Xinhua/Xu Suhui)
A traffic policewoman with a mask directs the traffic in Jinan, capital of east China's Shandong Province, Jan. 30, 2013. The local traffic policemen used masks to protect their health in hazy days.(Xinhua/Xu Suhui)
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