英语词汇fifth wheels怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	fifth wheels
释义	fifth wheel 第五轮，五轮仪半拖车连接轮试验(汽车停车距离等的)专用轮；备用轮不必要的人(或物)，多余的人(或物) 备用轮不必要的东西；多余的人
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