英语释义
1. a gastropod mollusk especially when having an external enclosing spiral shell
2. a slow-moving or sluggish person or thing
3. to move, act, or go slowly or lazily
4. a small animal that lives in a shell that it carries on its back, that moves very slowly, and that can live in water or on land
5. a small slow-moving mollusk that has a spiral shell into which it can draw itself for safety and that can live either on land or in water
6. any of various gastropod mollusks and especially those having an external enclosing spiral shell including some which are important in medicine as intermediate hosts of trematodes