Note: If you adjust the pivot or non-uniformscale of an instance, it will become unique.
注意:如果你调整轴心点或者不成比例缩放一个实例,它将变得唯一。
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Colliders do their best to match the scale of an object. If you have a non-uniformscale (a scale which is different in each direction), only the Mesh Collider can match completely.