a fifth wheel
基本解釋
- 多餘的人
- 多餘的東西
英漢例句
- A car does not need a fifth wheel.
一輛車通常不需要第五衹輪子。 - By definition, a fifth wheel is a wheel or a portion of a wheel with two parts rotating on each other that sits on the front axle of a carriage and adds extra support so it doesn’t tip.
通過(guò)定義，第五個(gè)輪子，是成爲(wèi)一個(gè)四輪馬車的前車軸上互相鏇轉(zhuǎn)的兩個(gè)部分的一個(gè)輪子或一個(gè)輪子的一部分，而加上一個(gè)額外的輔助輪子，這樣它就不會(huì)傾斜。 - He was the only one without a date, so he felt like a fifth wheel.
他是唯一沒(méi)被邀請(qǐng)的人，因此他感到自己很是多餘。 - Trailers are typically attached to tractors by a "fifth wheel, " in which a coupling pin on the trailer fits into the center of a large horseshoe-shaped piece of metal.
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