名词
中文翻译：邮政事务
同义词：
['mail', 'correspondence', 'mails']
例句：
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1. The postoffice is closed for the holiday.
邮局因假期而关闭。
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2. I need to send somepost matters to my friend in another city.
我需要将一些邮政事务寄给我在另一个城市的朋友。
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3. The postal servicehas been improving their delivery times.
邮政服务一直在提高他们的投递时间。