A bicycle has two wheels.

自行车有两个轮子。

So I bought her a bicycle.

所以我给她买了一辆自行车。

My sister said, Please buy me a bicycle.

我妹妹说：“请给我买辆自行车。”

I have a bicycle, and he often helps me with my English.

我有一辆自行车，他经常帮我学英语。

My uncle gave me a bicycle.

我叔叔送给我一辆自行车。

A Hollander likes to ride a bicycle.

荷兰人喜欢骑自行车。

Mae taught me how to ride a bicycle.

母亲教我如何骑自行车。

He rides a bicycle to work every day.

他每天骑单车上班。

He quickly learned to ride a bicycle.

他很快就学会了骑自行车。

You can hire a bicycle at the airport.

你可以在机场出租一辆自行车。