“电灯泡”怎么用英语说?
The term third wheel is a corruption of fifth wheel, which refers to someone who deters the socialization of a couple, perhaps when being invited out of pity or through a feeling of duty.
third wheel是fifth wheel(多余的人,备用胎)的误用,指的是影响一对夫妇或情侣交往的人,也就是中文里常说的电灯泡。