3.The hospital has a backup generator in case there is a power failure.
医院有备用发电机以防停电。
4.We had no computer backup and had to rely on old paper files to reconstruct the records.
我们没有计算机备份,只得靠落后的纸档案。
5.The CROSSCHECK command synchronizes the logical records of RMAN backups and copies with the files on storage media.
CROSSCHECK命令同步RMAN备份和储介质上副本的逻。
6.On Monday they even tested a backup procedure—canting the shovel at the end of the probe's robotic arm and shaking it to dribble soil a bit at a time.