It was the enemy 's boast of impregnability that caused their own defeat .

敌人自我吹嘘战无不胜，这最终导致了他们自己的失败。

The need to be seen protecting the home front has apparently extended political impregnability over another big chunk of the federal budget .

让民众看到保护家园的需要，显然使政治坚盾延伸到了联邦预算的另一大项上。

Above all , the rightwing economic and political ideas first popularised by margaret thatcher in the 70s have , finally , lost their air of impregnability .

尤其是由玛格丽特撒切尔在70年代首次推行的右翼经济和政治观点，终于失去了其坚不可摧的气势。