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axle

noun
🔊/ˈæksl/
🔊/ˈæksl/
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  1. a long straight piece of metal that connects a pair of wheels on a vehicle车轴
    • the front/rear axle前／后车轴
    Topics Transport by car or lorryc1
    Word OriginMiddle English (originally axle-tree): from Old Norse ǫxultré.