词汇	roll vortex
释义	roll vortex 滚轴涡旋
随便看	He penetrated their designs He Pengfei Hepenstal Hepenstrick He peppered food He peppered the ball across the green He peppered the soup He peppered the wild ducks with bird shot Heper He perambulated in the park heperbaric oxygen therapy He percent of pass He perched himself on a high stool He perched himself was perchedon a high stool He perched himself was perched on a high stool He perched himself [was perched]on a high stool He perched on a stool at the bar Hepereholesterolemia He perfected a flux-gate sensor in He perfected a flux-gate sensor in 1941 He performed for them a dance of his native he performed his functions ineptly He performed in drag He performed many daring exploits He performed well under pressure