Lǎo / shī / bǎ / zhè / kuài / pú / yù / jiāo / gěi / xué / sheng / ràng / tā / liàn / xí / diāo / kè

老师把这块璞玉交给学生，让他练习雕刻。

The teacher gave the uncut jade to the student for carving practice.