Natural fabrics like silk and wool are better insulators than synthetics.

丝绸和羊毛之类的纯天然织物比合成纤维更加保暖。

《柯林斯英汉双解大词典》

Clothes are traditionally made of natural materials, such as cotton, leather and wool.

传统上，衣服是由天然材料制成的，如棉花、皮革和羊毛。

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Daily life was marked by farming, sheep raising and wool production.

日常生活的标志就是耕作、牧羊和产羊毛。

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Yarn can be made from natural materials such as cotton, linen,silk and wool.

VOA: special.2009.11.04

It says the price index contained this amount of beef, this amount of sheep wool, this amount of sole leather, and this amount of corn; that was the first consumer price index ever used for financial contracts.

指数中包括这些数量的牛肉,这些数量的羊毛,这些数量的鞋底皮,这些数量的玉米,这是在金融合约里出现的,第一个消费者物价指数

耶鲁公开课 - 金融市场课程节选

These tapestries are made of the materials silk and wool.

VOA: special.2010.02.03

Mr Couriel sees these coming from exports, and not just from traditional beef and wool.

ECONOMIST: Counter-reform in Latin America

If that weren't enough, silk fabrics have been replaced by luxuriously textured, nubby blends such as cashmere and wool.

WSJ: Against the Grain

They will have plenty to swoon over here: breezy ankle length dresses in printed silk, tweed shorts-suits and wool cloaks.

FORBES: Gen Art Showcases Future Stars Of New York Fashion Week