The answer is plant phenols — cocoa phenols, to be exact.
答案是植物苯酚——确切地说是可可豆苯酚。
They were high in tannins and phenols, and colour was deep.
其单宁、总酚含量高，颜色深浓。
The analytic method of phenols in water was introduced in detail.
详细介绍了水中酚类化合物的测定方法。
The analytic method of phenols in water was introduced in detail.
详细介绍了水中酚类化合物的测定方法。
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