cirrostratus nebulosus

例句：

1. 1.The aurora borealis isa rare and beautiful natural phenomenon that occursin the northern hemisphere during thewinter months.
   极光是一种罕见的美丽自然现象，在北半球的冬季出现。
2. 2.The cirrostratus nebulosus was visible from the observation deck, providing a stunning view of the nightsky.
   气旋云状天体在观景台上可见，为夜空提供了令人惊叹的景象。
3. 3. The cirrostratus nebulosus has been observedto change color and shape over time,adding to its mystique as anatural wonder.
   气旋云状天体被观察到随着时间的推移颜色和形状发生变化，增加了其作为自然奇观的神秘感。