名词
中文翻译：Unknown
同义词：
['postage', 'postmark', 'postal flag例句：']
例句：
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1. The mail pennant was a symbol of the company's success.
邮旗是公司成功的象征。
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2.The postman delivered the mail pennant to the doorstep.
邮差把邮旗送到了门口。
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3. The postmark on the envelope indicates that it has been mailed.
信封上的邮戳表明它已经被邮寄了。