Metadata attachment is a bit easier with electronic formats.
对于电子格式，附加元数据稍微容易点。
If you have any requirement please check by downloading or printing the attachment enclosed in the (electronic) mail.
如果你有需要，可以下载或者打印电子邮件里的附件。
A certificate is an attachment to an electronic message used to verify the identity of the party and to provide the receiver with the means to encode a reply.
数字证书最通常的一个应用是验证一个正在发送信息的用户是否是他或她所宣称的那个人，并提供给接收者对应答进行编码的方法。
A certificate is an attachment to an electronic message used to verify the identity of the party and to provide the receiver with the means to encode a reply.
数字证书最通常的一个应用是验证一个正在发送信息的用户是否是他或她所宣称的那个人，并提供给接收者对应答进行编码的方法。
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