按照周期性间隔发送外发的电子邮件，同时复制服务器上的邮件文件来交换两个数据库之间的任何更改。
At a periodic interval, the outgoing email is sent, and the mail file is replicated with the server version to exchange any changes between the two databases.
电子数据交换—卖方采用电子方式填写和传递文件已经变得越来越普遍。
EDI: Electric Data Interchange - it is increasingly common for seller to prepare and transmit documents electronically.
开发人员不断来回发送电子邮件、即时消息及文件，来交换执行日常任务所需的必要消息。
Developers continually send E-mail, instant messages, and files back and forth to exchange the information necessary to perform daily tasks.
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