data backup system的用法和樣例：
例句
- You are strongly recommended to take a backup of your system before major installation and backups at regular intervals.
強烈推薦您在重大的安裝前備份系統，並且做到定期備份。 - The laptop computer in her satchel is turned off, but its disk is filled with bits and pieces of other people's files, as part of a distributed backup system.
在她背包里的筆記型電腦雖然關掉了，但硬碟里仍裝載了其他人檔案的位元片段，這是分散式備份系統的一部份。
