- 问题详情:Travelingbysubwaycansometimesbequiteanadventure,especiallyduringrushhour.Therearethetimeswhenyouhavetoavoidcupsofcoffeethatcouldspill(溅)onyou.Thesmellsofsomepassengers'foodareverystrong,too.AccordingtotheBeijingsubwaypassengerregulations,wh...
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