这是一个户外场景，一个日常场景。

It's an outdoor scene, an everyday scene.

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这些是我们在游戏户外场景中可以随意设置的随机事件，它们是设计好的脚本；

These are random events we can switch in and out in the outdoor worlds. They're scripted;

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他们的系统能够分析户外场景的相片，将“天空”与“地面”识别开，并且寻找视觉线索来区分水平面与垂直面。

Their system analyses photographs of outdoor scenes, identifies “sky” and “ground” regions, and looks for visual cues that distinguish horizontal surfaces from vertical ones.

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