Zhè / mén / kè / jiè / shào / jí / pí / dòng / wù / de / tǐ / bì / hé / shuǐ / guǎn / xì / tǒng

这门课介绍棘皮动物的体壁和水管系统。

This course introduces the body walls and water vascular systems of echinoderms.