pedal roller

例句：

1. 1. The pedal roller is a useful tool for moving heavy objects.
   踏板滚轮是移动重物的一个有用的工具。
2. 2. The engineer used the pedal roller to adjust the gears.
   工程师使用踏板滚轮来调整齿轮。
3. 3. The pedal roller was designed to make it easy for people with disabilities to move around.
   踏板滚轮被设计成让残疾人更容易移动。