shù / xué / kè / shàng / lǎo / shī / jiè / shào / le / Bì / dá / gē / lā / sī / de / shēng / píng / hé / gòng / xiàn

数学课上，老师介绍了毕达哥拉斯的生平和贡献。

In math class, the teacher introduced Pythagoras's life and contributions.