名词
中文翻译：备份磁盘
同义词：
['backup drive', 'backup media例句：1. We need to back up our data regularly to prevent data loss in case of system failure.（我们需要定期备份数据，以防系统故障导致数据丢失。）']
例句：
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1. We need to back up our data regularly to prevent data loss in case of system failure.
我们需要定期备份数据，以防系统故障导致数据丢失。
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2. The server has a backup disk that can be used as a replacement if the main disk fails.
服务器有一个备用磁盘，如果主磁盘失败，可以使用它作为替代。
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3. The engineers replaced the faulty hard drive with a new backup disk and tested the system for functionality.
工程师用新的备份磁盘替换了故障的硬盘，并测试了系统的功能性。