loose warp pile

例句：

1. 1. The weavers were busy with their loose weft piles.
   织布工们忙于他们的松散经纱堆。
2. 2.The loose weft piles made the fabric soft and breathable.
   松散的经纱堆使布料柔软且透气。
3. 3.The loose weft piles are prone to fraying, which can affect the quality of the finished product.
   松散的经纱堆容易起毛，这会影响成品的质量。