But just as that final barrier began to crash, he panicked.

As later chapters show, these barriers are beginning to differentiate the corporate winners from the losers.

But even after those barriers have begun to crumble, there are few signs of heat.

I set my foot upon it, and with each step that I took, another barrier began to rise against me.

Some of the growth of interest in business is also attributable to the women's movement, as occupational barriers begin to fall.

The subsequent barrier to travel began the evolutionary divergence of species in different locations.

To his surprise, after a couple of moments the barrier began to slide him down toward the ground.

By the early 90's, however, the barriers between idealism and commerce had begun to crumble, for two main reasons.

The four looked out as the huge metallic barriers began to part with a loud groan.

The barrier began to give way, irising into an opening tall enough for him to step through.