名词
中文翻译：平邮快递
同义词：
['postal express', 'mail express']
例句：
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1.We sent the package by pony express to save time.
我们通过平邮快递发送了包裹，以节省时间。
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2.The pony express was a popular way for people to send letters and parcels during the 19th century.
平邮快递是19世纪人们发送信件和包裹的一种流行方式。
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3. Pony express is still used today as an alternative to traditional postal services.
平邮快递仍然被用作与传统邮政服务相替代的选项。