两段英语短文求翻译谢谢！！！Insingle-fileformationandwithremarkableeconomyofmovement,halfadozenmenboundupthefaceofasix-footwall,leapintotheexposedgapofastairwell,thenreappeartwostorieshigherperchedon

　　两段英语短文求翻译谢谢！！！

　　Insingle-fileformationandwithremarkableeconomyofmovement,halfa

　　dozenmenboundupthefaceofasix-footwall,leapintotheexposed

　　gapofastairwell,thenreappeartwostorieshigherperchedonthethin

　　ledgeofaterrace.Afterjumpingtoanotherbalconyseveralfeetaway,

　　theyvaultthesiderailandlowerthemselvestotheverandabelow

　　wheretheyhangfromtheedgeforafewmoments.Then,onebyonethey

　　drop3meterstotheground,collapsingintotightlywoundballs

　　androllingawaybeforepoppinguptoscalethefaceofanother

　　structureseveralyardsaway.Theentirecircuittakeslessthan30

　　secondstocompleteandcomprisesjustoneleginanearlyhour-long

　　sessionofthespectacularurbanadventureknownasparkour—wherethe

　　destination,tostealaphrase,isthejourney.

　　Thatcombinationofphysicalandmentalelementsistherealappealof

　　parkourtotruedevotees."Parkourtakesyoutoplacesandacross

　　boundariesyoudidn'tthinkyoucouldcrossbefore,"saysParisarea

　　traceurErwanSuquet,22."Thekeyistoprepareandendure."And

　　ultimatelytotestthelimitsofmindandbody.