The upheaval of the kidnapping and trial was a sharp demarcation in a life that had until then proceeded with little incident.

There was no sharp demarcation; the atmosphere merely thickened.

There is sharp demarcation between the steps, which leads to the factor of having "number of steps".

The vermilion border is the normally sharp demarcation between the lip (red colored) and the adjacent normal skin.

Then the pilot regained control and continued his ascent, heading at full speed toward the sharp demarcation of a cliff line.

I wanted to have a sharper demarcation with him when he entered the political world.

He'd have to speak to Sol about that: a fellow needed a little sharper demarcation of environmental detail to avoid role-fatigue.

A sharp and evil demarcation separated the two like a pane of glass.

A sharper demarcation between summer and fall usually helps signal a tree to begin the complicated process of severing its leaves, he explained.

Her eyes were dark with doubts and hesitations which the sharp demarcation of her mouth belied.