The front-mounted button is not a trackball, as has been speculated by some. It is a simple click-action multifunction "home" button analogous to the iPhone's central button.
正面的按键不是很多人所猜测的轨迹球，而是类似iPhone菜单键的一个简单的中心键。
2
An internally mounted, tactical electronic-warfare system is installed, too, "identification friend or foe" system, electronic countermeasures set and a central digital computer.
另外还装有一个中央电子战系统、敌我识别系统、电子对抗装置和中央数字式计算机。
3
A device for protection from the weather consisting of a collapsible, usually circular canopy mounted on a central rod.