也就是说在场景环境中，渲染面板的阴影按钮和渲染按钮必须按下！

This means that the Shadow Button of the Render Panel in the Scene Context and Render Buttons must be on!

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在分析已有的降雪和积雪模拟方法的基础上，提出了一种大场景环境下降雪和积雪模拟的新方法。

Based on the analysis of traditional simulation methods, this paper presents a new approach for simulation of snow falling and accumulating in large-scale terrain.

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这样学生不但能听到原汁原味的英语，而且能看到真实的英语交际场景环境，甚至可参与到交际中去。

So students can not only hear the original English, but to see real English communication scene and even take part in communication.

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