medium ring

• 中环

medium ring的用法和样例：

例句

1. The telescope also spied brightened spots on the middle ring's inner region, caused by an expanding wave of material from the explosion slamming into it.
   哈勃空间望远镜在中环区域内也探测到许多发光点，其原因是爆炸产生的强大的冲击波撞击环内的物质。