名词
中文翻译：Unknown
同义词：
['pyrogallol', 'tannic acid']
例句：
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1. The pyrogallol tannin in the dye is responsible for its vibrant color.
这种染料中的焦糖色素是其鲜艳颜色的原因。
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2. Tannins are found in many fruits and vegetables, including tea and chocolate.
鞣酸存在于许多水果和蔬菜中，包括茶和巧克力。
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3. The tannins in the wood protect it from rotting.
木材中的鞣酸保护它免受腐烂。