I need to send this by certified mail.
我需要以保证邮件的方式投寄。
Send certified mail, return receipt requested.
以挂号信方式寄出，收条交回。
You can use certified mail with a return receipt.
你可以用带回条的挂号信。
Mail your return by certified mail or use a delivery service.
通过保证邮件或速递服务来寄送申报表。
Are tender documents despatched by certified or registered mail?
招标文件是否以挂号邮递？
What's the difference between certified mail and registered mail?
回执信和挂号信有什么不同？
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