roll change pit

例句：

1. 1. Theroll change pit is located at the corner of Main Street and Second Avenue.
   换币机坑位于主街和第二大道的拐角处。
2. 2. The coin change pit was designed to make it easier for people to exchange their coins.
   硬币兑换机坑的设计是为了使人们更容易交换他们的硬币。
3. 3.The roll change pit has been closed due to safety concerns.
   由于安全担忧，换币机坑已经关闭了。