Ｃｙｌｉｎｄｒｉｃａｌ　ｒｏｌｌｅｒ?。簦瑁颍酰螅簟。猓澹幔颍椋睿纾蟆。幔颍濉。螅澹穑幔颍幔簦澹欤?，?。簦瑁濉。悖铮恚穑铮睿澹睿簦蟆。悖幔睢。猓濉。恚铮酰睿簦澹洹。螅澹穑幔颍幔簦澹欤　。裕瑁澹。悖幔睢。悖幔颍颍。瑁澹幔觯。幔椋幔臁。欤铮幔洌蟆。幔睿洹。螅瑁铮悖搿。欤铮幔洌螅。簦瑁椋蟆。耄椋睿洹。铮妗。猓澹幔颍椋睿纾蟆。幔颍濉。觯澹颍。螅簦椋妫妗。幔睿洹。颍澹瘢酰椋颍濉。欤椋簦簦欤濉。幔椋幔臁。螅穑幔悖濉? Ｉｎ?。纾澹睿澹颍幔欤。悖欤椋睿洌颍椋悖幔臁。颍铮欤欤澹颉。簦瑁颍酰螅簟。猓澹幔颍椋睿纾蟆。悖幔睢。猓濉。酰螅澹洹。幔蟆。螅椋睿纾欤濉。洌椋颍澹悖簦椋铮睢。欤铮悖幔簦椋睿纭。猓澹幔颍椋睿纾蟆?，?。幔睿洹。悖幔睢。悖幔颍颍。幔椋幔臁。欤铮幔洌蟆。椋睢。铮睿濉。洌椋颍澹悖簦椋铮睿? Ｃｙｌｉｎｄｒｉｃａｌ　ｒｏｌｌｅｒ?。簦瑁颍酰螅簟。猓澹幔颍椋睿纾蟆。幔颍濉。酰螅澹洹。椋睢。欤铮鳌。螅穑澹澹洹。幔穑穑欤椋悖幔簦椋铮睿螅? Ｃｙｌｉｎｄｒｉｃａｌ?。颍铮欤欤澹颉。簦瑁颍酰螅簟。猓澹幔颍椋睿纾蟆。幔颍濉。酰螅澹洹。椋睢。纾澹幔颍猓铮?，　ｄｒｉｌｌｉｎｇ?。恚幔悖瑁椋睿濉。幔睿洹。瑁澹幔觯。恚幔悖瑁椋睿澹?/p>