Cotton is a very useful fabric. 棉布是一种非常有用的面料。

　　It keeps the body cool during summer and warm in winter. 它能保持身体冬暖夏凉。

　　It is easy to dye, so people can make any color of clothes with cotton. 棉布很容易染色，所以人们可以用它做任何颜色的衣服。

　　Cotton is very soft, so it doesn't cause any allergies. 棉布非常柔软，所以它不会引起任何过敏。

　　As a result, cotton is the most widely used fabric in the world. 因此，棉布是世界上应用最广的面料。

　　People started to use cotton five thousand years ago. 人们五千年前就开始使用棉布了。

　　Do you know what the original color of cotton is?  你知道棉布最初是什么颜色吗？

　　It is white. However, some cotton has a brown or light purple color. 白色。但有些棉布带点儿棕色或浅紫色。

　　But people usually grow white cotton, because they can dye at any color they like. 但是人们通常种植白色的棉花，因为他们可以染任何他们喜欢的颜色。