名词
中文翻译：取消键
同义词：
['undo', 'cancel', 'deactivate']
例句：
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1. The user needs to press the cancel key on the keyboard to exit the program.
用户需要按下键盘上的取消键来退出程序。
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2. After the meeting, we need to cancel the key that will allow us to access the conference room.
会议结束后，我们需要取消那个允许我们进入会议室的按键。
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3. The software has a built-in feature to cancel any unsaved changes before saving.
该软件内置了一个功能，可以在保存之前取消任何未保存的改变。