表达 “break down barriers” 的意思是 “消除意见分歧，打破沟通障碍，消除隔阂”，强调 “增进不同群体之间的相互理解”。

例句
The company launched a campaign to improve relations and break down barriers between them and the local community.
这家公司发起了一场宣传活动，以改善关系并消除他们与当地社区之间的隔阂。

After several misunderstandings between the workers and team leaders, meetings were held to break down barriers.
在工人和团队领导之间发生了几次误会之后，为了增进双方之间的理解，公司举行了会议。

The talks were held to break down barriers between the two countries, but not much progress was made.
会谈旨在消除两国分歧，但进展甚微。