When you take your car to be serviced or repaired, you expect the mechanic to replace any worn or damaged parts with new ones.

当你把车开去维修时，你希望机修工把磨损的零件换成新的。

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Examine all parts and replace any damaged or worn components.

检查所有部件，更换任何损坏的或磨损的部件。

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Check for any seriously worn parts and replace if necessary.

检查任何严重磨损的零件，如有需要将其更换。

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