名词
中文翻译：备用磁带
同义词：
['backup tape', 'spare disc', 'backup disk']
例句：
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1. Weneed to make sure we have a sparetape in case the main one fails.
我们需要确保有备用磁带，以防主要磁带失败。
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2. Theengineer used a spare tapeto fix the computer'smalfunctioning screen.
工程师使用备用磁带来修复电脑故障的屏幕。
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3.The teacher asked the students to bring theirspare tapes for the next class.
老师要求学生们带备用磁带来下节课。