1 N-COUNT 障碍；壁垒；阻碍 A barrier is something such as a rule, law, or policy that makes it difficult or impossible for something to happen or be achieved. 障碍；壁垒；阻碍 [Also + against/between]
SYN obstacle, bar, block, handicap
2 N-COUNT 隔阂；阻碍 A barrier is a problem that prevents two people or groups from agreeing, communicating, or working with each other. 隔阂；阻碍 [Also + between]
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There is no reason why love shouldn't cross the age barrier.
爱没有理由不能跨越年龄的阻碍。
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She had been waiting for Simon to break down the barrier between them.
她一直在等待西蒙打破他们之间的隔阂。
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When you get involved in sports and athletes, a lot of the racial barriers are broken down.
当你参与到体育运动中的时候，很多种族隔阂就消失了。
SYN hindrance, check, difficulty, restriction
3 N-COUNT 关卡；栅栏 A barrier is something such as a fence or wall that is put in place to prevent people from moving easily from one area to another. 关卡；栅栏
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The demonstrators broke through heavy police barriers.
示威者们冲破了警察的重重设防。
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As each woman reached the barrier one of the men glanced at her papers.
每一位女士来到关卡前，其中一个男士便会扫一眼她的证件。
SYN barricade, wall, bar, block
4 N-COUNT 障碍物；挡板；屏障 A barrier is an object or layer that physically prevents something from moving from one place to another. 障碍物；挡板；屏障
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...a severe storm, which destroyed a natural barrier between the house and the lake. [+ between]
猛烈的暴风雨摧毁了房子和湖之间的一道天然屏障
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The packaging must provide an effective barrier to prevent contamination of the product.
包装必须提供有效的保护，以免产品受污染。
SYN wall, stop, fortification
5 N-SING 大关；界限 You can refer to a particular number or amount as a barrier when you think it is significant, because it is difficult or unusual to go above it. 大关；界限
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They are fearful that unemployment will soon break the barrier of three million. [+ of]
他们担心失业人数很快将突破300万大关。
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The Popular Front failed, as expected, to pass the 5 per cent barrier.
不出所料，人民阵线没能突破5%大关。
6 See also: crash barrier sound barrier
| Word Partnership | Use barrier with: |
| ADJ. | psychological barrier, racial barrier 2 |
| N. | language barrier 2 police barrier 3 barrier islands/reef 4 |
| PREP. | barrier between 2 3 4 |
| VERB. | break down a barrier, cross a barrier 2 3 4 |
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