例：Duties and taxes are the most obvious barrier to free trade.

　　关税及其他各种税是自由贸易最明显的障碍

　　2.N-COUNT A barrier is a problem that prevents two people or groups from agreeing, communicating, or working with each other. 障碍; 隔阂

　　例：There is no reason why love shouldnt cross the age barrier.

　　爱情没有理由不应跨越年龄障碍

　　例：She had been waiting for Simon to break down the barrier between them.

　　她一直在等着西蒙来破除他们之间的隔阂

　　3.N-COUNT 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. 栅栏; 围墙

　　例：The demonstrators broke through heavy police barriers.

　　示威者们冲破了警方的重重关卡

　　4.N-COUNT A barrier is an object or layer that physically prevents something from moving from one place to another. 屏障

　　例：A severe storm destroyed a natural barrier between the house and the lake.

　　一场猛烈的暴风雨摧毁了房屋和湖泊之间的天然屏障

　　5.N-SING 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

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