名词
中文翻译：回退机制
同义词：
['undo', 'backtracking mechanism']
例句：
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1.The software has a built-in backspace mechanism to help users undo their mistakes.
这款软件内置了回退机制，帮助用户撤销错误。
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2. The company's backspace mechanism is designed to prevent data loss during backup processes.
公司的回退机制设计用来防止数据在备份过程中丢失。
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3.The engineer used the backspace mechanism to erase the error message from his computer screen.
工程师使用回退机制将电脑屏幕上的错误信息清除。