Beautiful cirrus clouds were floating in the sky.

Beautiful scale clouds were spread across the sky.

The first time I saw a noctilucent cloud, it felt like I was dreaming.

The tangled clouds covered the sky, and it began to rain.

The cirrus intortus cloud was floating in the sky, creating a beautiful scenery.

There are altocumulus clouds in the sky.

When the volcano erupted, a glowing cloud covered the sky.

The air in this room is fresh.

What will you use this empty box for?

Looking at the bird flying high in the sky, I felt freedom.