resist sagging

例句：

1. 1. The fabric resisted sagging when it was washed.
   这件织物在洗涤时抵抗了下垂。
2. 2.The old house resisted sagging, but the roof needed repair.
   这座旧房子抵抗着下垂，但屋顶需要修理。
3. 3.The weight of the books made the shelves resist sagging.
   书籍的重量使书架抵抗下垂。