There must be a cloud passing over the sun, Lee thought.

A dark cloud comes over the sun; in an instant the air has turned cool.

He thought that over time because of the sun, the people turned dark skinned, or "black".

At first I thought a cloud was passing over the sun.

His was the feeling as when a cloud passes over the sun.

It was as if a cloud had passed over the sun.

He walked back to his car while clouds finally moved over the sun and the first drops of spring rain began to fall.

So this land shall have a long, bright morning before any clouds come over the sun.

A cloud passed over the sun and both men looked out of the windows.

The light failed, as if clouds had come over the sun.