crustacean

a. 甲壳纲的
n. 甲壳纲动物

crus.ta.cean

n.（名词）
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.
甲壳纲动物：任一种甲壳纲的数量占优的水生节肢动物，包括有螯虾、蟹、虾和藤壶等，其特征是具有节状身体、几丁质的外骨骼以及成对的、有关节的脚
adj.（形容词）
Of or belonging to the Crustacea.
甲壳纲的

来源：
From New Latin Crust3cea [class name] [neuter pl. of] crust3ceus [hard-shelled]
源自 现代拉丁语 Crust3cea [纲名] [] crust3ceus的中性复数 [前缀，表.硬的.]
from Latin crusta [shell] * see kreus-
源自 拉丁语 crusta [外壳] *参见 kreus-