From chat gpt
"3D arbitrary objects" typically refers to three-dimensional entities or shapes that are selected or defined without any specific pattern or requirement. In computer graphics and 3D modeling, the term might be used to describe objects that are created, manipulated, or placed within a virtual 3D space for various purposes, such as visualizations, simulations, or animations.
These objects can have various forms, sizes, and characteristics, and they are not necessarily constrained by any predetermined rules or constraints. They might be used to represent elements in a 3D scene, like buildings, characters, vehicles, or natural objects.
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