| 单词 | tannin |
| 释义 | tannin ['tæn.ɪn] (also tannic acid) noun countable or uncountable ■(one of) a group of chemicals which are found in plant cells, especially in leaves, bark (= a tree's outer covering) , and fruit which is not ripe 丹宁（酸），鞣酸 |
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