三个人一起骑的单车用英语怎么说啊

this is the bike of our three guys
一起骑是废话

一楼太武断了吧
Triple bicycle
Three-rider bicycle

three-man-Bicycle
三个人一起骑的单车没有一个专门的名词，你用合成词好了

Bicycle that three people rides together

bike that 3 people ride together

trple rider- bicycle