wear part

例句：

1. 1.The car has several wear parts that need to be replaced regularly.
   这辆车有几个需要定期更换的磨损部件。
2. 2. The engineer carefully examined the worn part of the machine before repairing it.
   工程师仔细检查了机器磨损的部分，然后进行了修理。
3. 3. The old watch had several wear parts that were no longer functioning properly.
   这只旧手表有几个磨损的部分不再正常工作。