名词
中文翻译：备份磁盘
同义词：
['backup disk', 'backup diskette']
例句：
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1.We need to make sure our data is backed up regularly.
我们需要确保我们的数据定期备份。
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2.The backup diskette contains all the necessary files for the project.
备份磁盘包含项目所需的所有文件。
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3. The backup diskette was lost in the storm and we had to start over.
备份磁盘在风暴中丢失了，我们不得不重新开始。