 
  
 I. ˈback·up [ˈbækʌp] 名词
1. backup (support):
-  backup
-  
-  backup
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2. backup 计算机:
-  backup
-  
-  backup
-  Backup nt <-s, -s>
ˈback·up copy 名词 计算机
-  backup copy
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ˈback·up disk 名词 计算机
-  backup disk
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ˈback·up light 名词 美 汽车
-  backup light
-  
ˈback·up sing·er 名词 美
-  backup singer
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-  backup capacitor 电气
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