Moving Circle
Look at this illusion for a while and it will appear to be shimmering and moving.
Also: Follow the outermost groove and watch it change from a groove to a hump as you go around the wheel.
移动圆环
盯着这个图像看一会儿，你会发现这个圆环正在发光转动。盯着外圈的凹槽看一会儿，你会发现它逐渐变成突起的了。