You should make a copy of the disk as a backup.
你应该将磁盘复制一个备份。
If that happens, the grasshopper has a backup defense.
如果发生这种情况，蚱蜢就有了后备防御。
The steps below show you how to do an incremental backup and restore.
下面的步骤向您展示了如何执行增量备份和恢复。
This will result in enormous redo logs to be generated for online backup data files.
对于联机备份数据文件，这将导致生成大量的重做日志。
In areas where the wind dies down, backup electricity from a utility company or from an energy storage system becomes necessary.
在风能不稳定的一些地区，需要供电事业公司或者能量储存系统来提供备用电能。
The hydrogen gas could then be fed into a storage system and used to generate electricity when additional or backup power is needed.
然后可以将氢气输入到存储系统中，并在需要附加或备用电源时用于发电。
Backup power could also be provided by linking wind farms with a solar cell, with conventional or pumped-storage hydropower, or with efficient natural-gas-burning turbines.
将风力发电厂与太阳能电池、常规或抽水蓄能的水电或高效的天然气涡轮机连接起来，也可以提供备用电力。
Although many of these storage media have high capacity, a backup tool with compression capabilities is a big plus, eliminating the inconvenience of multiple disks or large uploads.
尽管这些存储介质中有许多具有高容量，但具有压缩能力的备份工具是一大优势，它消除了多个磁盘或大型上传的不便。
The police had backup from the army.
警方得到了军方的增援。
Every part of the system has a backup.
这套系统的每个部分都有备件。
Sharon also sang backup for Barry Manilow.
莎伦还为巴里·马尼洛唱了伴唱。
We can use him as a backup if one of the other players drops out.
如果有参赛者退出，我们可以用他作为替补。
And, perhaps, similar to sails, they make a useful backup for when the lights go out.
也许，和帆船一样，它们在熄灯的时候可以作为有用的备用品。
Note how both these parts rely on R/C components as the ultra-reliable backup technology.
请注意这两个部分是如何依赖于无线电遥控元件的超可靠的备份技术的。
备份数据库。
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