它们还指出另一位对手FedEx正为美国邮政服务公司空运快件。
They also point out that FedEx, another competitor, carries express packages by air for the US Postal Service.
邮政服务公司与HBO共同推荐《约翰·亚当斯》，鼓励人们多多写信。
The Postal Service and HBO are teaming up to promote "John Adams" and to get people to write more letters.
虽然很难辨别哪些包裹里装的是社会保障支票等重要物品，但美国邮政（USPS）和联合包裹服务公司（UPS）会尽其所能优先处理敏感材料。
It can be hard to identify which parcels are carrying crucial items such as Social Security checks, but USPS and UPS try their best to prioritize sensitive material.
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