单击它，系统就会开启蓝牙文件交换。
一个对话框将会出现，请求用户开启蓝牙，像在图1中展示的那样。
A dialog will appear requesting user permission to enable Bluetooth, as shown in Figure 1.
这将发出一个请求来利用系统设置开启蓝牙（不需要停止你的应用）。
This will issue a request to enable Bluetooth through the system settings (without stopping your application).
两种机器人都装备了陀螺传感器来控制移动和保持平衡，传感器用来侦测障碍物，摄像头传输画面，整个功能通过蓝牙开启。
Both robots were equipped with gyro sensors to control motion and keep balance, sensors to detect obstacles, cameras to transmit images, and the ability to operate through Bluetooth.
如果这个方法返回false，那么蓝牙没有开启。
如果这个方法返回false，那么蓝牙没有开启。
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