名词
中文翻译：Unknown
同义词：
['support item', 'spare item', 'backup resource']
例句：
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1. We need to back up our data regularly to ensure it's safe in case of any system failures.
我们需要定期备份数据，以防系统出现故障。
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2. The company has a backup plan in place for the worst-case scenario.
该公司已经制定了一个最坏情况下的应急计划。
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3. The backup items were carefully organized by the team to ensure quick access during emergencies.
团队精心组织了备份物资，以确保在紧急情况下能够迅速取用。