an object like a fence that prevents people from moving forward from one place to another 屏障；障碍物
a problem, rule or situation that prevents sb from doing sth, or that makes sth impossible 障
the removal of trade barriers
贸易壁垒的消除
an object like a fence that prevents people from moving forward from one place to another 屏障；障碍物
a problem, rule or situation that prevents sb from doing sth, or that makes sth impossible 障
the removal of trade barriers
贸易壁垒的消除