soft fiber

例句：

1. 1. This soft fiber is ideal for making warm clothes.
   这种软纤维非常适合制作保暖衣物。
2. 2.The soft fiber in the fabric is gentle on the skin.
   这种面料的软纤维对皮肤很温和。
3. 3. The soft fiber of the wool is soft to the touch and warm to the wearer's body.
   羊毛的软纤维触感柔软，对穿着者的身体温暖。