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crustacean

noun
🔊/krʌˈsteɪʃn/
🔊/krʌˈsteɪʃn/
 (specialist)
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  1. any creature with a soft body that is divided into sections, and a hard outer shell. Most crustaceans live in water. crabs, lobsters and shrimps are all crustaceans. 甲壳动物（如螃蟹、龙虾和小虾）
    compare shellfishTopics Fish and shellfishc2