At runtime, a component user enters parameters on the page in the portlet.

在运行时，组件用户在portlet中输入页面上的参数。

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It is the component that a user can manipulate to change the underlying data model.

它是一个组件，用户可以使用它来更改底层数据模型。

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Also in the front tier is the user interface component.

在前端这一层还有用户界面组件。

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Essentially, it added an on-screen component that shows song requests and user activity on TVs via a Roku player (of course, the company has since gone on to offer other devices as well).

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It utilizes a phone's digital compass, and read out the direction the user is facing, something that is apparently very important when navigating through public transport, while the audio component opens up Google Map features in a non-visual way.

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