back-up plan
备选计划
back-up data
备份数据
back-up system
备份系统
back-up singer
伴唱歌手
back-up file
备份文件
back-up copy
备份副本
back-up power
备用电源
back-up drive
备份驱动器
we have a back-up plan in case the first one fails.
我们有一个备用计划以防第一个计划失败。
always back-up your important files regularly.
请定期备份您重要的文件。
the singer had a back-up dancer to help her perform.
这位歌手有一名伴舞来帮助她表演。
it's good to have a back-up power supply for emergencies.
在紧急情况下，拥有备用电源是好的。
create a back-up of your hard drive before installing new software.
在安装新软件之前，请备份您的硬盘驱动器。
the team's back-up goalie was ready to play.
球队的替补守门员已经准备好出场了。
make sure your back-up data is stored securely.
确保您的备份数据存储安全。
this is my back-up option if the primary one doesn't work.
如果主要选项不可行，这是我的备选方案。
we need to back-up the database every week.
我们需要每周备份数据库。
the back-up singer stepped in when the main vocalist was ill.
当主唱生病时，伴唱歌手顶替了。
do you have a back-up copy of the presentation?
您是否有演示文稿的备份副本？
back-up plan
备选计划
back-up data
备份数据
back-up system
备份系统
back-up singer
伴唱歌手
back-up file
备份文件
back-up copy
备份副本
back-up power
备用电源
back-up drive
备份驱动器
we have a back-up plan in case the first one fails.
我们有一个备用计划以防第一个计划失败。
always back-up your important files regularly.
请定期备份您重要的文件。
the singer had a back-up dancer to help her perform.
这位歌手有一名伴舞来帮助她表演。
it's good to have a back-up power supply for emergencies.
在紧急情况下，拥有备用电源是好的。
create a back-up of your hard drive before installing new software.
在安装新软件之前，请备份您的硬盘驱动器。
the team's back-up goalie was ready to play.
球队的替补守门员已经准备好出场了。
make sure your back-up data is stored securely.
确保您的备份数据存储安全。
this is my back-up option if the primary one doesn't work.
如果主要选项不可行，这是我的备选方案。
we need to back-up the database every week.
我们需要每周备份数据库。
the back-up singer stepped in when the main vocalist was ill.
当主唱生病时，伴唱歌手顶替了。
do you have a back-up copy of the presentation?
您是否有演示文稿的备份副本？
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