- 問題詳情:Inagreatmanycities,hundredsofpeopleridebikestoworkeverydayinNewYork,somebikeridershaveevenformedagroupcalledBikeforaBetterCity.Theydeclarethatifmorepeoplerodebikestowork,therewouldbefewerautomobilesinthedowntownpartofthecityandsolessdirtyairf...
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