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来源：雅诚德英语网
They belong to a class of sugar-based chemical compounds, also known as flavonoids.
它们属于一类糖基化合物，这种化合物也被称为黄酮。
They belong to a class of sugar-based chemical compounds, also known as flavonoids.
它们属于一类糖基化合物，这种化合物也被称为黄酮。