他在轮滑鞋上。

He is in the roller skates.

我每个周末都喜欢在公园里滑直排轮滑鞋。

I like to Rollerblade in the park every weekend.

一想到穿上轮滑鞋，你的脸上就会露出笑容。

Just the thought of strapping on your roller-skates brings a smile to your face.