It can be sewn into curtain hems to weight the curtain and so allow it to hang better.
可以把它缝在窗帘的摺边里以增加窗帘的重量,使之更有下垂感。
《柯林斯英汉双解大词典》
2
The best scenario would be to hang everything, but if that's not possible try to hang your lighter weight clothing items instead of your heavy sweaters.