driv的精選

問題詳情：   PreparingCitiesforRobotCarsThepossibilityofself-drivingrobotcarshasoftenseemedlikeafuturist’sdream,yearsawayfrommaterializingintherealworld.Well,thefutureisapparentlynow.TheCaliforniaDe...

問題詳情：Amiddle-agedman,XuShijie,fromKaifengisapedicab(三輪車）driver,orrather,atourguide.Overthepast15years,hehasservedhundredsofforeigntourists.HetoldthemstoriesaboutKaifenginEnglish.       ①...