//以下為知難行易的第三個材質的部分程式(粗燥的表面)

//     Four chinese words KNOW



surf {

           bump {

                   turb {

                           scale .5 .5 .5

                           amp .8

                           terms 1.6

                         }

                 }

             diff gold spec .7 .7 .7 shine 40

       }

//========================================================