If you check the standard life cycle of JSF, you will find that the user normally needs to produce an event on the Web page (by clicking a button, for example) to invoke the GUI refresh.

如果研究一下JSF的标准生命周期，不难发现用户通常需要在Web页面上生成一个事件(比如，通过单击一个按钮)来调用GUI刷新。

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Select the required wash cycle, dog size, put the dog in the machine, and press the start button and then your pet comes out clean and unharmed.

主人只需选定洗涤方式和宠物狗的大小尺寸，把狗狗放进机器，按下“开始键”后机器就会自动完成一系列过程，半小时后脏狗就变干净了。

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You can also use the A button to cycle through the pastries faster.

您也可以使用A按钮来循环的糕点更快。

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Speaking of the display, this one is swipeable, allowing the user to cycle through without pressing a button repeatedly.

ENGADGET: LG's Smart Activity Tracker wields a swipeable touchscreen and smart TV apps, we go hands-on (video)