英语口语1+1:Third wheel

【1+1英文】

Angela: "You two go on ahead without me. I don't want to be the third wheel."

【1+1中文】

安吉拉：你们两个去吧，我可不想当电灯泡。

【1+1解析】

The "third wheel" refers to the person who is the outsider when there is a group of three.
中文意思：第三者；电灯泡。