slider

The little slider laughed as she went down the playground slide.

用法提示：slider 是名词，指正在滑滑梯的人，意为‘滑动者’。

A careful slider can cross the frozen pond without falling.

用法提示：slider 是名词，指在冰面上滑行的人，意为‘滑动者’。

The zipper slider on my jacket suddenly broke.

用法提示：slider 是名词，指拉链上滑动的部件，意为‘滑动物’。