双人自行车的英文：
tandem bicycle
I've never ridden a tandem bicycle before.
我从来没骑过双人自行车。
They ride tandem on a bicycle built for two.
他们一前一后地骑着双人自行车。
Team work is vital in any sport, but tandem riding takes working as a pair to the extreme．
团体合作在任何运动项目中都至关重要，但是双人自行车赛将两个人的配合发挥到了极限。
n. 自行车，脚踏车，单车
v. 骑自行车
The bicycle doctor is doctoring my bicycle.
自行车修理工正给我修自行车。
The bicycles are kept under a shed.
自行车存放在车棚下面。
bicycle luggage carrier
自行车行李架
They like riding bicycles.
他们爱骑自行车。
I have a light bicycle.
我有量轻便的自行车。