Dear Sir,You have expressed your frustration and irritation with the city library over the past one year.

尊敬的先生，您来信表达了您在过去一年里对市图书馆的失望和气愤。

There are usually long lines waiting for assistance and for use of the computer card catalogue.

说等待帮助和使用电子卡片目录总是要排长队。

To avoid crowded conditions, we propose that you use the library during off-peak hours.

为了避免这种拥挤状况，我们建议您避开图书馆开放的高峰时间。

You should have no trouble getting help and using the card catalogue during the following periods: 11:30 am to 2:30 pm; 5:30 pm to 7:30 pm.

在11：30—14:30和17:30-19:30的时段里，您能方便地得到帮助和使用电子卡片目录。

The rest are our busiest times.

而其他时间段就是我们最繁忙的时候了。

We always appreciate hearing your comments on the library.

我们一如既往地愿意听取您对图书馆的意见。

Please let us know how you think this is working out.

请来信告知这条建议是否奏效。

Yours faithfully, Li Ming

您真诚的，李明