Important food fish of the north Pacific.
北太平洋中重要的食用鱼。
Important food fish of cold deep lakes of North America.
北美洲寒冷深湖中重要的食用鱼。
Important American food fish in the winter.
美洲冬季重要的食用鱼。
That's a problem, because stone flies are an important food for the fish.
这是问题所在，因为石蝇是鱼类重要的食物来源。
That's a problem, because stone flies are an important food for the fish.
这是问题所在，因为石蝇是鱼类重要的食物来源。
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