scraping ring

例句：

1. 1.The scraping ring on the edge of the table is worn smooth from years of use.
   桌子边缘的刮擦环因多年使用而磨损光滑。
2. 2. The scraping ring on the door handle is a useful tool for cleaning.
   门把手上的刮擦环是一个有用的清洁工具。
3. 3. The scraping ring on the car's bumper has been damaged in the accident.
   汽车保险杠上的刮擦环在事故中受损。