rawheel

例句：

1. 1.The car's rawheel is worn out.
   这辆车的轮子磨损了。
2. 2.The engineer replaced the rawheel with a new one.
   工程师用一个新的轮子替换了旧的。
3. 3.The rawheel on the tractor was damaged during the rainstorm.
   拖拉机上的轮子在雨中受损了。