【腾讯2分彩_2分彩充值_腾讯2分彩充值】10th World Congress on High

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A visitor shows a dummy high-speed train ticket from Ankara to Beijing in Ankara, Turkey, on May 8, 2018. The 10th World Congress on High-Speed Rail and Trade Exhibition was held in Ankara from May 8 to 11 with over 1,000 high-speed rail experts from all around the world meeting in the event themed "sharing knowledge for sustainable and competitive operations." (Xinhua/Qin Yanyang)

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