劣质羊毛

例句：

1. 1. The company's new line of clothing uses high-quality wool for the outer fabric.
   该公司的新系列服装使用高质量的羊毛作为外层布料。
2. 2. The poor quality wool is causing the sweaters to shrink after washing.
   这种劣质羊毛在洗涤后会导致毛衣缩水。
3. 3. The poor quality wool makes the sweaters look cheap and unattractive.
   这种劣质羊毛使毛衣看起来廉价且不吸引人。