back sb up是什么意思？

• polite
• monitor
• 分配英文
• banger
• chess翻译
• dragon
• amazing
• autumn
• passage
• 局外人英文
• 解决方案英文
• panicked
• modernize
• saturday
• narrow
• searches
• 实施英文
• text
• 呼吁英语
• intermission
• 来源英语
• 方案英语
• 流浪者英文
• predict
• pear
• front
• PAXLOVID怎么读
• crayon
• lake
• begins

• profile
• 抛弃英文
• mind
• general
• juice
• approaches
• algiers
• default
• client
• searches
• general
• explore
• reveal
• lycopene
• bombarded
• failure
• fake
• giraffe
• cloud
• erased
• aspect
• candy
• satisfaction
• neck
• lesson
• organizations
• 旋律的英文
• vehicle
• rice
• silver

• trash can
• unpunished
• not anymore
• be hard on
• insist on
• internet cafe
• unloving
• go on diets
• put on weight
• in the long term
• unexplained
• Yeti
• comic strip
• mountail climber
• run after
• in the dark
• life jacket
• up close
• tourist spot
• a great deal of
• westerner
• weatherman