独轮车的英文是 unicycle。它来源于拉丁文，unus（单个的）和cycle（车）的合并。

例句：

I learned how to ride a unicycle when I was a kid.

我小时候学会骑独轮车。

The circus performer balanced on a unicycle while juggling.

马戏演员骑着独轮车边平衡边杂技。

My unicycle has a seat that can be adjusted to different heights.

我的独轮车有一个可调节高度的座位。