freshwater mollusks
... 淡水龙虾 crayfish 淡水软体动物 freshwater molluscs 淡水生态学 freshwater ecology ...
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水产专业的学生将学习鱼类，软体动物和其他淡水生物的养殖知识。
Students of aquaculture learn to cultivate fish, mollusks, and other foods that may be raised in fresh water or salt water.
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