The largest barrier to Collins' influence has been the limited availability of her works.

He also orders a large fence-like barrier to be built around the house.

But those settlements are also one of the largest barriers to any possibility of peace.

Cut an opening in the new barrier slightly larger than the stoma.

There is a large barrier on the part of companies to accept anything but Intel.

The company quickly ran into a large technical barrier.

But further plans in western Europe have been opposed by environmentalists who say the large barriers would be too disruptive for natural life.

His vulnerability to concussions seems to be a large barrier to that revival.

These large, airborne barriers protected important installations against low-level air attack.

Almost all of the respondents said local call costs were the largest barrier to Internet use.