impregnable

形容词

1. 1

   难以攻破的、固若金汤的

   The old castle sat on a cliff and looked completely impregnable.

   那座古堡建在悬崖上，看起来固若金汤。

2. 2

   无法驳倒的、无懈可击的

   Her argument was impregnable, and no one dared to question it.

   她的论点无懈可击，没有人敢质疑。

3. 3

   不可动摇的、坚不可摧的

   The team built an impregnable lead in the second half.

   这支球队在下半场建立了不可动摇的领先优势。