An image that a viewer continues to see after the actual object is no longer in sight.
An image that a viewer continues to see after the actual object is no longer in sight.
中义当凝视一个物体一段时间后移开视线，眼中仍会有物体的影像存在。
An image that a viewer continues to see after the actual object is no longer in sight.
中义当凝视一个物体一段时间后移开视线，眼中仍会有物体的影像存在。