The Postal Service says it is less costly to send letters and packages in the mail than to use private companies. The Postal Service says it has cut operating costs by a total of fourteen billion dollars in the past five years. To improve its financial health, the agency has proposed cutting service on Saturdays.美国邮政称与私人公司相比,其发送信件和包裹的成本要低.美国邮政表示,在过去5年中其运营成本总共削减了140亿美元.为了改善其财务状况,该机构已经提议削减周六的邮政服务.
_____________________________________________________.