Additional controls are necessary to specify how to process that content.
指定如何处理该内容还需要附加的控制。
The screens could also offer additional controls for the phone's built-in iPod or camera applications.
辅助显示屏还可以为iPhone内置的一些iPod或相机应用增加额外的控制键。
Users can tap the screen to open an app or press down firmly to access a new range of additional controls.
用户可轻点屏幕打开应用程序或是用力按压来使用一系列附加控件。
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