小国学网>谜语>What is black when it is clean and white when it is dirty? (打一物体)

What is black when it is clean and white when it is dirty? (打一物体)

收录日期:2025-08-08 03:34:20  热度:9℃

谜语:What is black when it is clean and white when it is dirty? (打一物体)

谜底:A blackboard黑板

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