The operating system will also feature an undo gesture, which will undo the last action by shaking the phone.

操作系统将增加撤销手势，用户只需震动一下手机就可以撤销最后一步操作。

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If you have application where the user can edit a text file, for example, they may want to undo their last action.

例如，你有个程序，用户可以编辑文本文件，他们应该有需要取消他们最后一次编辑。

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Undoes the last action or a sequence of actions, which are displayed in the Undo list.

撤消上一个操作或者一系列操作，这些操作显示在“撤消”列表中。

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