tā / bǎ / xiū fù / gǔ jí / dàng zuò / zhèng yè / yè yú / shí jiān / cái / xué xí / shè yǐng

他把修复古籍当作正业，业余时间才学习摄影。

He regards restoring ancient books as his regular profession and studies photography only in his spare time.