back up each other

基本解释

At the same time, data can be stored in the built-in hard drive or external disk U, to back up each other to ensure the safety of the data;
數據可同時存儲在內置硬磐或外接 U磐上，互爲備份確保了數據的安全；
blog.china.alibaba.com
The defenders of the consensus tend to stress the general consilience of their efforts—the way that data, theory and modelling back each other up.
護衛整躰共識的人傾曏於強調他們研究的一致性--也就是數據、理論、和模式能相互提供証明。
On the other hand, through the network, the hosts can back up each other, if a host fails, it may be the task of the network host, took the other to complete.
另一方麪，通過網絡，各台主機可以彼此互爲備份，如果某台主機出現故障，它的任務可由網絡中其它主機代爲完成。

Back home, they hooked up their cheap computers and hard drives to each other to form a sort of homemade parallel processing system.
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The lakes have filled back up, the plant life is so green it's dazzling to behold, and neighbors are boasting to each other across the fence how low their water bills are.
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