driv的精选

问题详情：   PreparingCitiesforRobotCarsThepossibilityofself-drivingrobotcarshasoftenseemedlikeafuturist’sdream,yearsawayfrommaterializingintherealworld.Well,thefutureisapparentlynow.TheCaliforniaDe...

问题详情：Amiddle-agedman,XuShijie,fromKaifengisapedicab(三轮车）driver,orrather,atourguide.Overthepast15years,hehasservedhundredsofforeigntourists.HetoldthemstoriesaboutKaifenginEnglish.       ①...