Their aides said they thought the measure had become too narrow.

The definition of a private club has become increasingly narrow.

At one moment, the tunnel becoming very narrow, I leaned against the wall.

"Medicine is becoming too narrow and I wanted to do something more broad-based."

The way was becoming steeper and narrower all at once.

As a result, the pavilion main facets have become narrower.

In this condition, the small arteries of the lung become narrow, which makes it hard for blood to flow.

If the arteries to the heart become narrow, blood flow to the heart can slow down or stop.

As you moved up, the field became narrower and narrower.

Maybe the whole thing was becoming a bit narrow; all the ideas were becoming similar.