挑战你的视觉 开动你的脑筋
日期:2011-12-21
Keep staring at the black dot...
盯着中间的点看一会儿
After a while the gray haze around it will appear to shrink.
Keep staring at the black dot...
盯着中间的点看一会儿
After a while the gray haze around it will appear to shrink.