The Postal Inspection Service would examine the postage and postmarks and seek to determine where the envelopes were mailed from.

政检查局将检查费和戳，以确信件的寄地点。

Most of the money would come from a penny-per-letter permanent rate increase and from shifting postal retirees into Medicare.

这些资金大部分来自费率的增长（注：政系统刚出现时，发一封信只要贴一便士的票）以及将退休政员的企业医保转为国家医保。

But postage was expensive and the system for calculating fees was complicated.

但费昂贵，而且计算费用的系统也很复。

The next morning brought Elinor a letter by the two-penny post from Lucy herself.

第二天早上，埃莉诺用两便士的费给露西送来了一封信。

The envelopes had more postage than needed to be delivered, according to a former law enforcement official briefed on the investigation.

据一位对调查知情的前执法官员，那些信件的费超过了原本所需的金额。

Yes, it may seem a little weird, but it does save on postage.

是的，这可能看起来有点奇怪，但它确实节省了费。

I have walked London streets for twelve and fifteen hours together without ever a thought of saving my legs, or my time, by paying for waftage.

我一起在伦敦街道上走了 12 到 15 个小时， 从来没有想过花钱买费来节省我的腿或时间。

The extra postage led investigators to believe that the person who sent the devices wanted to avoid going to a post office to buy the correct postage - a step to evade detection, said the official.

额外的费让调查人员以为，发件人是不想去局付合的费——这步棋是为了逃避侦查，该官员说。