inline skate
noun [ C usually plural ] (also in-line skate) uk/ˌɪn.laɪn ˈskeɪt/ us/ˌɪn.laɪn ˈskeɪt/
直排轮滑（穿单排滚轴冰鞋滑行）
roller skates (= special boots worn for travelling fast for sport or enjoyment) with a single row of small wheels on the bottom
Synonym: Rollerblade