crustacean
noun /krʌˈsteɪʃn/
  /krʌˈsteɪʃn/
 (specialist)- enlarge imageany 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) 



