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BNC: 15901 COCA: 5476

backup

1 ENTRIES FOUND:
backup /ˈbækˌʌp/ noun
plural backups
backup
/ˈbækˌʌp/
noun
plural backups
Learner's definition of BACKUP
[count] : a person or thing that can be used to replace or support another person or thing后备人员;备用物品
often used before another noun常用于另一名词前
[noncount] : help or support provided by additional people or things增援;支援;后援
[count] US : a situation in which the flow of something (such as traffic) becomes blocked(交通等)堵塞,不畅
[noncount] : a musical part that is sung to support the main singer伴唱;伴奏
often used before another noun 常用于另一名词前
[count] : a copy of information stored on a computer(资料的)备份
often used before another noun 常用于另一名词前
also : the act or process of making such a copy备份(过程)
see also back up at 4back

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