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有27个透明的小立方体,其中有的小立方体内装了一只小球。现在将这些小立方体叠放成为一个大的立方体。下图是从3个不同的角度观察该立方体得到的正视图、俯视图和侧视图。请问:这个大立方体最多能够装多少只小球?
There are 27 transparent small cubes, some of which contain a small cube inside the ball. Now these small cubes stacked into a large cube. The figure below is a front view, top view and side view of the cube viewed from three different perspectives. Excuse me, how many balls can I fit in this big cube?