any of various freshwater crustaceans of the genera Cambarus and Astacus,resembling a lobster but considerably smaller

 
  • 螯蝦任一種喇蛄屬和螯蝦屬的淡水甲殼類(lèi)動(dòng)物,形狀象龍蝦但比龍蝦要小
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