The caution device is composed of dislocation sensor and alarm circuit, the former is set above the forward driving system.
所述挂具离位警示装置由挂具离位检测器和报警电路构成，所述挂具离位检测器设置于前进带动系统上方。
Continuously getting a user's location can really drain the battery of a mobile device, so use these APIs with great caution.
持续不断获取用户位置信息将会耗尽设备资源，所以请谨慎使用这些API。
Caution: Beginning with Android 3.2 (API level 13), the "screen size" also changes when the device switches between portrait and landscape orientation.
注意：从Android 3.2 (APIlevel13)开始，“screensize ”也随着设备的横竖屏切换而改变。
Caution: If you invoke an intent and there is no app available on the device that can handle the intent, your app will crash.
注意：如果你调用了一个意图，但是设备上却没有任何可处理该意图的应用程序，你的应用将会崩溃。
Caution: If you invoke an intent and there is no app available on the device that can handle the intent, your app will crash.
注意：如果你调用了一个意图，但是设备上却没有任何可处理该意图的应用程序，你的应用将会崩溃。
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