1. He was busy assembling the bike.
    他忙着装配自行车。

2. He is the owner of the bike.
    他是这辆自行车的主人。

3. I usually go to school by bike.
    我通常骑自行车上学.

4. I nearly fell off my bike.
    我几乎从自行车上摔下来。

5. In Flagstaff, Arizona, a thousand miles of bike trails lead into the San Francisco Peaks, the highest summit in the state.
    在亚利桑那州的弗来格斯达佛市，有1000英里长的自行车道通向圣弗朗西斯科山峰，那是该州的最高峰。