roller skate
noun [ C usually plural ] uk/ˈrəʊ.lə skeɪt/ us/ˈroʊ.lɚ skeɪt/
四轮旱冰鞋
a type of boot with four wheels on the bottom that you wear in order to travel along quickly for enjoyment
a pair of roller skates 一双四轮旱冰鞋
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