wearout failure

例句：

1. 1. The car's engine is wearing out quickly.
   这辆车的引擎很快就磨损了。
2. 2. The oldmachine was a wear-out failure.
   那台旧机器是个磨损失败的例子。
3. 3. Theteam's performance has been a wear-out failure.
   团队的表现一直是磨损失败。