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1. The car's traction gear is designed to prevent the vehicle from slipping on wet roads.
汽车的牵引齿轮设计用来防止车辆在湿滑路面上打滑。
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2.In this case, the traction gear was responsible for preventing the train from derailing.
在这种情况下，牵引齿轮负责防止火车出轨。
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3.The engineer had to replace the traction gear because it was worn out after several years of use.
工程师不得不更换磨损的牵引齿轮，因为它在使用几年后已经磨损了。