tricycle

He cannibalized his old bicycle to repair his tricycle.

他把旧自行车的零件拆下来修配他的三轮车。

A game that is very popular with these young swimmers is the underwater tricycle race.

这些幼小的游泳运动员非常喜爱的一种游戏是水下三轮车比赛。

The extension bridge is steep,so the tricyclist has to get off his tricycle and push it up.

引桥陡滑，三轮车车夫必须下车把三轮车推上桥。