An annular eclipse occurs when the moon does not cover the entire disc of the sun so that a ring of light encircles the shadow of the moon.
当月亮不能完全遮住太阳时，月亮影子的周围就会有一圈亮光，日环食就发生了。
2
The shadow of the fringe of trees along the vast expanse of sand hung motionless along its border, and the ring of blue-grey hills around the horizon slept calmly beneath the sky.
广阔沙地两旁的树影，一动不动地垂挂在其边沿，圆圆的地平线上，灰蓝色的山在天空的怀里恬静地睡着了。
3
The shadow length implies the moonlet is protruding about 200 meters, or 660 feet, above the ring plane.