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2019-2020年高中英语Unit5Travellingabroad检测新人教版选修【导语】 人们终于可以摆脱提着行李箱旅游的辛苦了外出旅游时,你不仅不用提着重重的行李箱,它反而会载着你四处旅游!TravellingbysuitcaseCHANGSHA,June20Xinhua—Tiredofluggingyoursuitcasetoairportsandhotels?AChineseinventorhaseupwithasolution.Driveit.Aftermorethan10yearsofexperimentsonhundredsofsuitcases,61-year-oldinventorHeLiangcaifinallycreatedasuitcasethatcanbedriven.Thebattery-poweredmultifunctionalcasecancarrytwoadultsandbelongingsandtravelataspeedof20km
12.4milesperhourfasterthanmostcycles.Thesuitcasehasbeenreinforcedtocarryextraweightwiththreewheelsattachedandahandlebar手把connected.Hehasarangeofdrivablepiecesofbaggageweighingfrom7to10kgdependingonsize.Acustom-madelithiumbattery锂电池canpoweracaseforuptothreehours.“Thebatteryislightandsmallbutofhighcapacity,”saidHeamanageratavehiclerepairplantinthe1980s.Hedecidedtoturnhishandtoinvention...。