back file 备用文件 ; 备份文件
ridged-back file 平三角锉
Back up file sequence error 备份文件顺序错误
back-up file 后援文件
roll back data file [计] 重算数据文件
back-end allocation file 期后分摊文件
file back-up [计] 文件备份
file back up 文件备份
write back to register file 暂存器档案回写
N the archives of a newspaper or magazine 报刊资料库
The next morning, when I turned my computer back on, it informed me that a file had been corrupted and Windows would not load.
第二天早上，当我重新打开电脑时，它告诉我一个文件已经损坏，Windows 无法加载。
He had to rush back to the office and file a housing story before the secretaries went home.
他不得不赶回办公室，在秘书们回家之前提交一份有关住房的报道。
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