最准确地测量一个目标的距离的方法是运用“视差”，视差是指从不同角度观察一个目标而产生的视角的差异。
The most precise way to measure an object's distance is to use "parallax" - differences in perspective created by viewing an object from different angles.
图层之间的起始高度和距离的各种组合将在特定的距离和视角上生成不同的体积效果。
Various combinations of starting altitude and distance between layers will produce different volumetric effects at specific distances and viewing angles.
这一距离加上从空间站上倾斜鸟瞰下来的视角，使图片上呈现出来的蒙特利尔城区有所缩短。
This distance from the camera target, coupled with the oblique (inclined) viewing angle from the ISS, results in the foreshortened appearance of urban areas in the image.
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