英语释义
1. any of a large phylum (Mollusca) of invertebrate animals (such as snails, clams, or squids) with a soft unsegmented body usually enclosed in a calcareous shell broadly shellfish
2. any one of a large group of animals (such as snails and clams) that have a soft body without a backbone and that usually live in a shell
3. an animal (as a clam, snail, or octopus) that lives mostly in water and has a soft body usually enclosed in a shell containing calcium
4. any invertebrate animal of the phylum Mollusca