zài / zhí / wù / kè / shàng / lǎo / shī / xiàng / wǒ / men / jiè / shào / le / yù / shǔ / shǔ / de / shēng / zhǎng / guò / chéng

在植物课上，老师向我们介绍了玉蜀黍的生长过程。

In botany class, the teacher introduced us to the growth process of corn.