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The university has schools for law, medicine and social work. - 2
Every day, USPS processes, on average, 493.4 million pieces of mail—anything from postcards to Social Security checks to medicine. 美国邮政局平均每天处理4.934亿封邮件，从明信片到社保支票再到药品，无所不包。 - 3
Every day, USPS processes, on average, 493.4 million pieces of mail —anything from postcards to Social Security checks to medicine. 每天，美国邮政平均处理4.934亿件邮件--从明信片到社保支票再到药品，无所不包。
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