lǎo / shī / jiǎng / wán / zhè / dào / jǐ / hé / tí / hòu / shuō / ： / tóng / xué / men / ， / zhèng / míng / wán / bì / ， / qǐng / dà / jiā / jì / xià / jié / lùn / 。

老师讲完这道几何题后说：“同学们，证明完毕，请大家记下结论。”

After the teacher finished explaining this geometry problem, he said: 'Class, the proof is complete, please write down the conclusion.'