fifth-wheel

基本解釋

The tractor frame uses super-long fifth-wheel pick-up plate as well as plate reinforced cross member.
牽引車(chē)車(chē)架采用了超長(zhǎng)的鞍座連接板及連接板加強(qiáng)橫梁。
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The evertible reinforced fifth-wheel pick-up plate is introduced on the reinforced frame. The adoption of two-layer fifth-wheel pick-up plate enables it carry more load.
并在加強(qiáng)型車(chē)架上增加了外翻式加強(qiáng)鞍座連接板，雙層鞍座連接板的采用，使其更具有超強(qiáng)的裝載能力。
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A mother-in-law on a honeymoon is a fifth wheel.
度蜜月時(shí)，丈母娘是個(gè)大電燈泡。

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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