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bulltrout的音标：bulltrout的英式发音音标为：['bʊltraʊt]bulltrout的美式发音音标为：['bʊltraʊt]...

This paper summarized classification, functions, varieties of colorant and factors affecting coloration of salmon and bulltrout.本文阐述了着色剂的分类及作用 、 着色剂种类的选择及影响鲑鳟鱼着色效果的因素....