backup 的英语意思
backupbackup /ˈbækʌp/ noun 
查看全部语言翻译1[countable] something that you can use to replace something that does not work or is lost备用物；用以替换故障或丢失之物: 
Always have a backup plan.始终要有备用方案。 a backup generator备用发电机2[countable] a copy of a computer document, program etc, which is made in case the original becomes lost or damaged计算机文档、程序等的备份副本，以防原件丢失或损坏: Make a backup of any work you do on the computer.将您在电脑上所做的任何工作都备份一份。3[uncountable] people or things that can be used to provide support and help if they are needed在需要时可提供支援和帮助的人员或物资: Army units can only operate if they have sufficient backup.陆军部队只有在获得充足后援的情况下才能行动。 a backup team后援队伍4[countable] American English someone who will play in a sports team if one of the other players is injured or ill当球队其他球员受伤或生病时代替上场的运动员 SYN reserve: a backup goalie替补守门员
查看全部语言翻译1[countable] something that you can use to replace something that does not work or is lost备用物；用以替换故障或丢失之物: Always have a backup plan.始终要有备用方案。 a backup generator备用发电机2[countable] a copy of a computer document, program etc, which is made in case the original becomes lost or damaged计算机文档、程序等的备份副本，以防原件丢失或损坏: Make a backup of any work you do on the computer.将您在电脑上所做的任何工作都备份一份。3[uncountable] people or things that can be used to provide support and help if they are needed在需要时可提供支援和帮助的人员或物资: Army units can only operate if they have sufficient backup.陆军部队只有在获得充足后援的情况下才能行动。 a backup team后援队伍4[countable] American English someone who will play in a sports team if one of the other players is injured or ill当球队其他球员受伤或生病时代替上场的运动员 SYN reserve: a backup goalie替补守门员