业余时间

spare time

业余学习

study in spare time

业余学校

spare-time school

业余收入

wages from working in one's free time

业余爱好

hobby

他的业余爱好是集邮。

His hobby is collecting stamps.

业余文娱活动

amateur artistic activity

业余文娱小组

amateur arts group

业余剧团

amateur troupe

业余演出的戏剧

amateur performance of a play

业余文艺会演

amateur theatrical festival

业余文艺晚会

amateur gala

业余歌手

amateur singer

业余摄影家

amateur photographer

业余作家

amateur writer

业余爱好者

amateur enthusiast