Duties and taxes are the most obvious barrier to free trade. [+ to]

关税和税收是自由贸易的最大壁垒。

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。

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。

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。

The demonstrators broke through heavy police barriers.

示威者们冲破了警察的重重设防。

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。

...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

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。

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。

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。