名词
中文翻译：邮件旗
同义词：
['postal flag', 'mail flag', 'postal flag']
例句：
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1.The mail flag was flying high in the breeze.
邮旗在风中飘扬。
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2.The mail flag was a symbol of national pride.
邮旗是国家自豪的象征。
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3. The mail flag was displayed at the entrance of the post office.
邮旗在邮局入口处展示。