shēng / wù / kè / shàng / lǎo / shī / gěi / wǒ / men / jiè / shào / le / mǎ / kē / dòng / wù / de / fēn / lèi / hé / tè / zhēng

生物课上老师给我们介绍了马科动物的分类和特征。

The biology teacher introduced the classification and characteristics of Equidae animals to us in class.