1.壁垒,堡垒
2.筑城术
1.a defensive fortification or embankment made of earth
2.the planning or building of defensive fortifications or embankments made of earth
1.To break the 'technique vallation' by Europe, we must make our own means.
打破欧盟的“技术壁垒”,建立我国的技术壁垒措施。
2.Breaking through the green vallation and coordinating it with WTO rules
论绿色壁垒的突破及其与世贸规则的协调