英语单词“fifth wheel”的翻译、意思、用法、释义-英汉词典

单词	fifth wheel
释义	fifth wheel1.■2.■第五轮，五轮仪3.■半拖车连接轮4.■试验(汽车停车距离等的)专用轮；备用轮5.■不必要的人(或物)，多余的人(或物)6.■备用轮7.■不必要的东西；多余的人
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