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BNC: 27884 COCA: 22455
tannin
tænɪn ˈtænɪn
N-UNCOUNT 丹宁酸,鞣酸(用于制革、染色) Tannin is a yellow or brown chemical that is found in plants such as tea. It is used in the process of making leather and in dyeing. 丹宁酸,鞣酸(用于制革、染色)
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BNC: 27884 COCA: 22455
BNC: 27884 COCA: 22455
BNC: 27884 COCA: 22455

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