问题描述：
Two students are sitting on opposite sides of the same desk.There is nothing between (下面是完整的)
Two students are sitting on opposite sides of the same desk.There is nothing between them but the desk.Why can`t they see each other?[翻译]
Two students are sitting on opposite sides of the same desk.There is nothing between them but the desk.Why can`t they see each other?[翻译]
问题解答：
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