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The risin and tannin that can be extracted from it are sought by the chemical industry.

从中提香和是化学很需要

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揭秘泰坦尼克号

It takes years for a skeleton to vanish, but the shoes treated with tannic acid—they won't eat them.

骸骨需消失,但是用鞣酸处理过鞋子——海水无法吞噬它们。

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Part-Time Genius

Turns out, it was made from the tannic acid of gall nuts.

原来,它是用食子(五倍子)中鞣酸制成

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英国学生科学读本

The water draws out of this bark a substance known as tannin; and the tannin changes the soft, jelly-like skins into tough, strong leather.

在水作用下, 树皮泌一种名叫鞣酸物质, 而它就可以把凝胶一般柔软毛皮变成结实、牢固皮革。

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buff, buffa, buffable, buffalo, Buffalo Bill, buffalofish, buff-duff, buffer, buffer solution, buffer state,

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3G, 401(K), a,
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