We know from experience that if this Angle is too small that the ladder will slide, and so I want to make the topic today "What should that Angle be so that it does not slide?"

从经验中我们，知道若这角过小，梯子就会滑下来，所以今天的主题是，“这个角度多大时，它不会滑下来。”

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Movie comedy style makes me feel create new styles, I think, the audience will be from another Angle to understand the local customs and practices of sichuan.

电影的轻喜剧风格让我感觉独出心裁，我想，观众会从另外一个角度了解四川的风土人情。

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I will mention the limitation of this technique right away: this will be no real Fresnel effect, because it is dependent on the camera Angle - not really the incidence Angle.

我将立即指出这个技术的局限性：这不会有真实的菲涅尔效应，因为它依赖照相机的角度-而不是实际的入射角。

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