"一辆小自行车" 用英语可以说作 "a small bicycle"。

Bicycle 是英语中的单词，来源于法语的 "bicyclette"，最早的记录可以追溯到19世纪。

例句1:
I ride my small bicycle to work every day.
(我每天骑我的小自行车去上班。)

例句2:
She bought a new small bicycle for her son.
(她给儿子买了一辆新的小自行车。)

例句3:
He wants to fix his small bicycle, but he doesn't know how.
(他想修理他的小自行车，但是他不知道怎么做。)