Hobbism

例句：

1. 1.I have a hobby of collecting stamps.
   我有集邮的爱好。
2. 2. He has an interest in photography.
   他对摄影有浓厚的兴趣。
3. 3. She enjoys playing the piano as her hobby.
   她喜欢弹钢琴作为她的爱好。