front idler wheel

例句：

1. 1. The car's front idler wheel is worn out.
   这辆车的前驱动轮磨损了。
2. 2. The driverneeds to inspect the front idler wheelregularly.
   驾驶员需要定期检查前驱动轮。
3. 3. Theengineer replaced the front idler wheel witha new one.
   工程师用一个新的前驱动轮替换了旧的。