质量差的

例句：

1. 1. The product has a high quality and is well-received by customers.
   该产品质量高，深受顾客欢迎。
2. 2.The teacher's teaching style greatly influences the students' learning quality.
   老师的教学方法极大地影响了学生的学习质量。
3. 3. The company's commitment to environmental protection has significantly improved its product quality.
   公司对环境保护的承诺显著提高了其产品质量。