Peer-to-peer remote copy (PPRC) is a protocol to mirror a disk from one storage system to another disk in a remote site.

点对点远程复制(peer - to - peer remote copy, PPRC)是将磁盘从一个存储系统镜像到远程站点中的另一个磁盘的协议。

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Recall that X Window System is a protocol by which video output can be sent from one host to another.

X Window System是一种协议，按照这种协议在主机之间发送视频输出。

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(And since we're describing an automated test execution system instead of a manual one, participants rarely need to establish a direct remote desktop protocol (RDP) session with running instances.)

而且因为我们描述的是自动化测试执行系统，而不是手动系统，所以参与者仅需建立与正运行的实例的直接远程桌面协议(rdp)会话。

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If all the ad networks and exchanges get behind one protocol, the system will work better.

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