barrier基本解释
n,[地物]障碍物，[建]屏障；界线,同近
barrier相关例句和用法He advocated the removal of trade barriers..他提倡消除贸易壁垒。
barrier英英释义障碍物，屏障；界线英释nna rule, problem etc that prevents people from doing something, or limits what they can do
barrier短语trade barrier,贸易壁垒.短语
