1. 滑旱冰：rings----吊环 | roller skating----滑旱冰 | rowing-----划船

2. 溜 冰：20.滚 灯 Rolling Lamps | 21.溜 冰 Roller Skating | 22.魔术古钟 Magic Clock

3. 滚轴溜冰：s pair of skates 一双溜冰鞋 | roller skating 滚轴溜冰 | roller skates 滚轴溜冰鞋

noun

1. skating on wheels