标准视口矩形是专门用来定义当前相机的视点将显示在屏幕的哪一部分。

Normalized Viewport Rectangles are specifically for defining a certain portion of the screen that the current camera view will be drawn upon.

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在这种情况下，视口显示了非洲大陆。

In this case, a viewport displays the continent of Africa.

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这部影片展示了如何在视口可以显示网页，灯光和他们的分销网络。

This video demonstrates how the viewport can display IES lights and their web distribution.

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