Sharon also sang backup for Barry Manilow.(莎伦还为巴里·马尼洛唱了伴唱。)
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。)
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 police had backup from the army.(警方得到了军方的增援。)
The complete backup in DB2 should be an offline backup.(在DB2中，完全备份应该是一个离线备份。)
Every part of the system has a backup.(这套系统的每个部分都有备件。)
Backup the database.(备份数据库。)
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。)
Test cold backup.(测试冷备份。)
You should make a copy of the disk as a backup.(你应该将磁盘复制一个备份。)
