soiled cotton

例句：

1. 1. The dirty cotton waswashed by the machine.
   脏的棉花被机器洗了。
2. 2. The soiled cotton wassent to the cleaners.
   脏的棉花被送去清洗。
3. 3. The dirty cotton was usedfor making new clothes.
   脏的棉花被用来制作新衣服。