The USPS currently manages over 40 million transactions every day, from tracking priority mail to shipping packages for customers at local post offices.
目前，USPS每天处理大约四千万份交易，为美国邮局系统提供从挂号信到邮政包裹的跟踪服务。
The USPS currently manages over 40 million transactions every day, from tracking priority mail to shipping packages for customers at local post offices.
目前，USPS每天处理大约四千万份交易，为美国邮局系统提供从挂号信到邮政包裹的跟踪服务。
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