|
A third wheelis a person or thing that serves no useful purpose, or an unwanted third party accompanying two people on a date. Such a person is as useful as a third wheel on a bicycle. Third wheel指不发挥任何作用的人和事物，或是在两人约会时陪伴在旁的一个多余的人，即我们所说的“电灯泡。之所以叫third wheel是因为这样的人就跟自行车上放第三个轮子一样，一无是处。 For example: 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. | 
