词汇	roll a pencil
释义	roll a pencil 旋转笔
随便看	all purpose rubber all-purpose rubber all-purpose runner all-pur-pose runner all purposes all-purposes all-purpose sand all-purpose screw all-purpose semer all-purpose ship all-purpose simulation all purposes of hours all purpose spreader All-Purpose Statistical Package All-Purpose Submarine Periscope System all purpose tester All-purpose tester all-purpose tester for vehicles all-purpose tools all purpose tractor all-purpose tractor all-purpose-tractor all-purpose trainer all-purpose transformation all purpose transilluminator