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老师边在黑板上画着图形,边妙趣横生地解释着光的直线传播。谁知坐在窗子旁边的一位十岁的男生,听了一会课后,却不
The teacher paints a graphic on the blackboard and explains the light’s linear spread in a fun-filled way. Who knows sitting next to the window of a 10-year-old boy, after listening to a class, but not