英语翻译JasonQueallyisoneofthefastestmenintheworldonabicycle.Butdoyoureallycallthethinginthepictureabicycle?Well,yes.Jason'shuman-poweredmachine,withitstwowheels,is,of,course,abicycle.Everyyear,averyimportan

　　英语翻译

　　JasonQueallyisoneofthefastestmenintheworldonabicycle.Butdoyoureallycallthethinginthepictureabicycle?Well,yes.Jason'shuman-poweredmachine,withitstwowheels,is,of,course,abicycle.

　　Everyyear,averyimportanthuman-poweredbicycleraceisheldinNevada,USA.Thespeedofthebikeismeasuredforonly200metres,butplayerstakemorethanakilometretogettheirbikesgoingfast,JasonQueally'sfastestspeedforthe200-metreracewas103.5kilometresanhour.

　　Atthisyear'srace,Jasonfailedtoreachthefinishingline.Hewasspeedingalongataboutseventykilometresanhourwhenhebegantolosecontrolofhisbike.Whenhetriedtoslowdown,itbegantosmoke.Soontheinsideofhisbikewasfilledwithsmoke.Hecouldn'tsee,andliecouldn'tbreathe.Atseventykilometresanhour,acrashcouldbeveryserious.Jasonwasfightened,buthemanagedtostopthebikesafely,Hewouldrepairhisbicycleandtryagainanothertimetobetheworld'sfastestmanonabike.Betterlucknexttime,Jason.

　　Maybeyou'resurprisedthatthesebikesgosoquickly,butisituseful?Itcouldbe.Carsarebecomingmoreandmorepopular,andtheyareverysafe,comfortableandeasytodirive.Buttheyalsopollutetheairinourcities.Scientistsandengineersarelearningfromfastracingbikeshowtomakehuman-poweredvehiclesthatmightbeusefulfordailytravel.