worn flange

例句：

1. 1.The worn flange on the door is holding up well.
   门上的磨损法兰支撑得很好。
2. 2. The old car has a worn flange that needs replacing.
   这辆旧车有一个磨损的法兰需要更换。
3. 3.The engineer inspected the worn flange before starting the machine.
   工程师在启动机器之前检查了磨损的法兰。