单词 echinus 释义 echinus Zool.|ikans|Also 4 echynnys, 6 echynus.[a. L. echnus, Gr. ἐῖ hedgehog, sea-urchin.]The Sea-urchin; a genus of animals (Order Echinoidea, Class Echinodermata), inhabiting a spheroidal shell built up from polygonal plates, and c...