英文字典中文字典51ZiDian.com
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Malacostraca 软甲亚纲 软甲亚纲 Malacostraca n 1: largest subclass of Crustacea including most of the well- known marine, freshwater, and terrestrial crustaceans: crabs; lobsters; shrimps; sow bugs; beach flies [synonym: {Malacostraca}, {subclass Malacostraca}] Malacostraca \Mal`a*cos"tra*ca\, prop. n. pl. [NL., from Gr.
malako`s soft ? shell of a testacean.] (Zool.) A subclass of Crustacea, including Arthrostraca and Thoracostraca, or all those higher than the Entomostraca. [1913 Webster]
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