名詞 crustacean:

1. any mainly aquatic arthropod usually having a segmented body and chitinous exoskeleton

形容詞 crustacean:

1. of or belonging to the class Crustacea
   同義詞：crustaceous

crus.ta.cean

n.（名詞）
Any of various predominantly aquatic arthropods of the class Crustacea, including lobsters, crabs, shrimps, and barnacles, characteristically having a segmented body, a chitinous exoskeleton, and paired, jointed limbs.
甲殼綱動物：任一種甲殼綱的數(shù)量占優(yōu)的水生節(jié)肢動物，包括有螯蝦、蟹、蝦和藤壺等，其特征是具有節(jié)狀身體、幾丁質(zhì)的外骨骼以及成對的、有關(guān)節(jié)的腳
adj.（形容詞）
Of or belonging to the Crustacea.
甲殼綱的

來源：
From New Latin Crust3cea [class name] [neuter pl. of] crust3ceus [hard-shelled]
源自 現(xiàn)代拉丁語 Crust3cea [綱名] [] crust3ceus的中性復數(shù) [前綴，表.硬的.]
from Latin crusta [shell] * see kreus-
源自 拉丁語 crusta [外殼] *參見 kreus-