名词
中文翻译：邮政机
同义词：
['automatic mail sorter', 'automatic post office equipment']
例句：
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1. The post machine is designed to sort and deliver mail efficiently.
这台邮政机被设计来高效地分拣和投递邮件。
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2. The post machine has made it much easier for people to send their letters and parcels.
这台邮政机让人们发送信件和包裹变得更加容易了。
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3.The post machine was invented in the 19th century to improve postal services.
这台邮政机是在19世纪发明的，用来改进邮政服务。