名词
中文翻译：Unknown
同义词：
['1. postal sorting']
例句：
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1. The post office uses a machine to sort the mail before it is sent out.
邮局使用一种机器来对邮件进行分拣，然后才能发出。
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2. The mail sorting center is responsible for sorting and organizing the mail.
邮件分拣中心负责对邮件进行分拣和组织。
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3. The mail selection process involves selecting the most important or urgent mail fordelivery.
邮件选择过程包括选择最需要或最重要的邮件进行投递。