求翻译：　　② 保湿性：由于棉纤维是热和电的不良导体，热传导系数极低，又因棉纤维本身具有多孔性，弹性高优点，纤维之间能积存大量空气，空气又是热和电的不良导体，所以，纯棉纤维纺织品具有良好的保湿性，纯棉织品使人感觉到温暖。是什么意思？

2 : wet wool because it is hot and a poor conductor of electricity and heat transfer coefficient is very low, and because their own Wool with porous, flexible high-strength, fiber can accumulate large amounts of air, the air is hot and it is a poor conductor of electricity, and therefore, pure wool