Police canines prep for travel season
(Ecns.cn) Updated: 2015-01-21 15:14 |
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A police dog searches for explosives among various suitcases in a training exercise in Xi'an, Northwest 皇冠体育app's Shaanxi province, on Jan 20, 2015. Police dogs are specially trained to sniff out traces of explosives and other harmful substances. [Photo/皇冠体育app News Service] |