不可逾越用英语怎么说？

不可逾越

例句

• There was an impassable barrier between the white race and the one which they had reduced to slavery. 在白色人种和被他们奴役的种族之间有一道不可逾越的障碍。
• What sort of life went on beyond the impenetrable lines of the Red irregulars. 在红军非正规部队的这道不可逾越的防线后面,生活究竟是怎样的呢?
• Watching Marcello Desailly with his imposing built figure patrolling the midfield. Unpassable wall! 马塞尔.德塞利凭借自己强壮的身体和充沛的体能坐镇米兰中场, 形成一道不可逾越的坚实屏障!
• They constituted a near - insuperable obstacle to the besieging infantry. 它们就会形成围城步兵几乎不可逾越的障碍.
• It'should not, however, pose an insuperable barrier to environmental standing. 然而, 在环境起诉权这个问题上不应该设置不可逾越的障碍.