本文前面所有的清单都关注于api的query动作，演示如何从内容库中检索不同类型的数据。
All the previous listings in this article focused on the API's query action, illustrating how you can use it to retrieve different types of data from the content repository.
如果按下相应的停止按钮，会产生一个StateChange通知消息，并且会调用一个Restart动作，将应用程序恢复到运行状态，这一点在前面已经讲到了。
If the corresponding stop button is then pressed a StateChange notification is generated and a Restart action is invoked to get the application back to the running state, as discussed previously.
走到摄像头前面并使用动作进行控制使团队工作比轮流使用键盘鼠标更简单， Fritz说。
Stepping in front of the camera and taking control with gestures could make group work easier than having to take turns at a keyboard or mouse, Fritz says.
应用推荐