BEIJING,(Xinhua)—China’scapitalcitylauncheditsfirstunde...
问题详情：BEIJING,(Xinhua)—China’scapitalcitylauncheditsfirstundergroundlibrary,“MSubwayLibrary”onJan.12，2015.Thethemeofitsfirstactivityis“OurCharacters”.CitizensridingthespecialtrainonsubwayLine4n...