Upon receiving this event, the controller knows that the feed data is cached in the model object and can be presented in the view.

一旦收到此事件，控制器就会知道提要数据是在模型对象中缓存并可在视图中展示。

youdao

Be sure that this id doesn't change over time by inadvertently passing in variables from the controller - in the case of the feed id, you want it to be both unique and invariant.

应确保这个id以后不会因为无意中传入来自控制器的变量而变化—对于feed id，它应该既是惟一的，又是不变的。

youdao

Upon receiving this event, the controller knows that the model failed to communicate with the ATOM feed and an error message needs to be displayed.

一旦收到此事件，控制器就会知道模型没能与ATOM提要通信，需要显示一个错误消息。

youdao

In addition to the cameras and sensors, APX also hacked an Epson daughter board onto the Moverio's controller to allow an HDMI video feed from a smartphone to be shown on the displays.

ENGADGET