（三） 　　We are responsible to replace the defective ones.

　　我们保换质量不合格的产品。

　　It's really something wrong with the quality of this consignment of bicycles.

　　这批自行车的质量确实有问题。

　　I regret this quality problem.来源：www.hxen.com

　　对质量问题我深表遗憾。

　　We hope that you'll pay more attention to the quality of your goods in the future.

　　希望贵方将来多注意产品的质量问题。

　　The workings of these machines are inaccurate.

　　这批机器运行不准。

　　Upon arrival， we found the shipment of wool was of poor quality.

　　货到后，我们发现羊毛的质量较差。来源：www.hxen.com

　　The quality of the fertilizer is inferior to that stipulated in the contract.

　　化肥质量次于合同中规定的。来源：恒星

　　inferior quality 次质量

　　to be responsible for 对……负责

　　inaccurate 不精确的

　　poor quality 质量较差

　　to be inferior to 次于……

　　first-class 一等品

　　unsatisfactory 不满意的