dǎo / yóu / jiè / shào / shuō / gǔ / dài / shuǐ / láo / shì / yì / zhǒng / cán / kù / de / qiú / jìn / chǎng / suǒ

导游介绍说，古代水牢是一种残酷的囚禁场所。

The guide explained that water prisons were cruel places of confinement in ancient times.