bicycle與bike意思相同，作名詞都有“自行車；腳踏車”的意思，作動詞有“騎自行車”的意思，二者拼寫不同。另外bicycle較為書面，較正式，bike較口語化一些。

bicycle與bike的用法

1.I got there by bicycle.

I got there by bike.

我騎腳踏車去那兒。

2.It only takes eight minutes by bicycle to the dancing class.

It only takes eight minutes by bike to the dancing class.

騎自行車去上有舞蹈課只需要八分鐘。

3.You can go there either by bicycle or on foot.

You can go there either by bike or on foot.

你要么騎車要么步行去那里。

4.The man bumped me off the bicycle.

The man bumped me off the bike.

那人把我從自行車上撞下來。

5.I'm going by bike, and you may go by bus.

I'm going by bicycle, and you may go by bus.

我呢，騎自行車去，你們呢，坐汽車去。