| 单词 | backup |
| 释义 | backupbackup /ˈbækʌp/ ●○○ noun 1[countable] computers a copy of computer information that you can use if the original information is lost or does not work: a backup copybackup of Make a backup of any work you do.2[countable] something that you can use to replace something that is lost or does not work: a backup generator Take an extra flashlight as a backup.3something or someone used to provide support and help when it is needed: Several police cars provided backup for the officers.4[countable] a player who plays on a sports team when another player is ill or injured |
| 随便看 |
英语词典包含48224条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。