It is this tannin which makes leather durable and soft.

鞣酸让皮革更加柔软，更耐用。

And if you're talking about tannin, oak imparts tannin, from the wood.

如果你说的是单宁酸，橡木赋予单宁酸，来自木材。

Fruity, fresh red wines have fewer tannins, so they don't need to breathe as much, if at all.

果味浓郁的新鲜红葡萄酒单宁较少，因此它们不需要呼吸太多，如果要的话。

" It is beautiful and nuanced, with fine tannins and a sense energy" .

" 它出色而细腻，丹宁酸也恰到好处，感觉充满活力。"

But plants don’t make tannins so that humans can have long-lasting, protective clothing.

不过植物不是为了人类能有耐用的皮革穿才制造单宁酸的。

The tannins are part of the defense mechanism that is essential to longevity.

“单宁”是防御机制的组成部分，也是长寿的重要因素。

Its tannins and oils are used in treating clothes and skins and making oiled paper.

它的单宁酸和油可用于处理衣服和皮毛，以及制作油纸。

When we talk about wine that's aged for, you know, 10,20,30 years, a lot of those wines have tannin.

当我们谈论陈年葡萄酒时，你知道，10，20，30 年，很多葡萄酒都有单宁。

Five more minutes.Don't want to rush those tannins.

再等5分钟, 别弄糟单宁酸。

During the summer the bark is peeled from the trees and taken to factories where the tannin is taken out.

在夏天，我们会从树上削树皮，之后进入工厂提取鞣酸。