敬启者:感谢你订购我们更多的计算机外围设备(peripherals)。如你所知,我们的政策是不断提高我们产品的质量和性能。因此,

敬启者:
感谢你订购我们更多的计算机外围设备(peripherals)。
如你所知,我们的政策是不断提高我们产品的质量和性能。因此,你要求的T873型调制解调器(modem)已不再生产。我们已经用一个更好的型号ET873取代了它。这个新型号比旧版本的性能要好3倍,但价格只贵半美元。我们已经附上了一份详细的技术数据表。我们将在您向我们发送确认函后立即交付您的订单。
XXX谨上
【正确答案】:Dear Sirs,
Thank you for ordering more of our computer peripherals.
As you know, our policy is to continuously improve the quality and performance of our products. So the modem you requested, Model T873 is no longer in production. We have replaced it with a better model, ET873. This new model outperforms the old version by 3 times but costs only half a dollar more. We have enclosed a detailed technical data sheet.
We will deliver your order immediately after you send us your confirmation.