lǎo / shī / zài / kè / shàng / jiè / shào / le / liǔ / xiù / zài / gǔ / dài / xīng / guān / tǐ / xì / zhōng / de / wèi / zhi

老师在课上介绍了柳宿在古代星官体系中的位置。

The teacher introduced Liǔxiù's place in the ancient system of stellar officials in class.