third wheel

基本解釋

"I felt like the third wheel, " she said.
"我覺得自己像個電燈泡，"她說。
But when you just want pure speed its stands upright with the third wheel on top, which supposedly helps keep it balanced.
你要是純粹想體驗速度，它可以豎起來，第三只輪子置于頂部，保持車體平衡。
Larry and Jenny asked me to go out for dinner yesterday, but I said no, because I didn’t want to be a third wheel.
賴瑞和詹妮昨天叫我跟他們一起出去吃飯，但是我沒去，我可不想當電燈泡。

In the publicity surrounding the new Twilight film, Eclipse, actor Taylor Lautner often looks like the third wheel.
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With John Krasinski, as the eternal third wheel and second fiddle.
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The third view-busting project is the Millennium Ferris Wheel on the south bank of the Thames, but since this would be only temporary—five years has been suggested—it is causing less worry.
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