传统上，衣服是由天然材料制成的，如棉花、皮革和羊毛。
Clothes are traditionally made of natural materials, such as cotton, leather and wool.
购买天然材料如棉花做成的可重复使用购物袋，尽可能多使用几次。
Purchase reusable grocery bags made of natural materials such as cotton and use them as often as you can.
天然的纤维物质，如棉花，往往会用来做运动衫，因为它们穿起。
Natural fibers, such as cotton, tend to be used in sportswear because.
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