Lì / shǐ / kè / shàng / lǎo / shī / jiè / shào / le / qíng / xíng / zài / gǔ / dài / fǎ / lǜ / zhōng / de / zuò / yòng

历史课上，老师介绍了黥刑在古代法律中的作用。

In history class, the teacher explained the role of facial tattooing in ancient law.