11.   But trade barriers have prevented technological gains being passed on to the consumer.

12.   Regulatory barriers prevent it from opening shops in Europe, and the company has no plans to open or acquire drugstores in the United States, Thomas said.

13.   Telecommunications are one of the most vital sectors of the world economy, but trade barriers have prevented technological gains from being passed on to the consumer.

14.   Technological gains have slashed real communication costs but trade barriers have prevented this being passed on to the consumer.

15.   Telecommunications is one of the most dynamic sectors of the world economy but trade barriers have prevented technological gains being passed on to the consumer.

16.   Technological gains have smashed real communication costs but trade barriers have prevented this being passed on to the consumer.

17.   The barriers have prevented a party congress and the customary weekend rallies the Nobel Peace laureate holds before thousands of people each week.

18.   They complained that the brick barrier would prevent tourist buses from parking close to their souvenir stalls.

19.   They complained that the brick barrier would prevent tourists from visiting their nearby souvenir stalls.

20.   Trade barriers have prevented technological gains from being passed on to the consumer.