roller-skate

例句：

1. 1. She decided to roller-skate in the park this weekend.
   她决定这个周末在公园里溜冰。
2. 2. He bought a new roller-skate for his birthday.
   他为了生日买了一双新的轮滑鞋。
3. 3. The kids love roller-skating on the frozen lake.
   孩子们喜欢在冰冻的湖面上滑冰。