名词
中文翻译：邮件路线
同义词：
['postal route', 'postal route', 'mail route']
例句：
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1. The postal service has been upgrading its mail routes to improve delivery times.
邮政服务一直在升级其邮件路线，以改善递送时间。
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2. The new postal route will connect two towns and save time for both residents and businesses.
新的邮政路线将连接两个城镇，为居民和企业节省时间。
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3. The mail route is a crucial part of the country's transportation system.
邮件路线是国家交通系统的重要组成部分。