Impregnable

(adj.) incapable of being overcome, challenged or refuted; 'an impregnable argument'; 'impregnable self-confidence' .

(adj.) immune to attack; incapable of being tampered with; 'an impregnable fortress'; 'fortifications that made the frontier inviolable'; 'a secure telephone connection' .

康斯坦丁校对

• Melnos is not impregnable. 弗格斯·休姆. 奇幻岛.
• Bragg had about half this number, but his position was supposed to be impregnable. 尤利西斯·格兰特. U．S．格兰特的个人回忆录.
• A continuous line of impregnable fortifications circles the outer slopes of the Mountains of Otz. 埃德加·赖斯·巴勒斯. 火星战神.
• At four o'clock Hooker reported his position as impregnable. 尤利西斯·格兰特. U．S．格兰特的个人回忆录.
• I questioned Thuvia, asking her what enemies the therns could fear in their impregnable fortress. 埃德加·赖斯·巴勒斯. 火星战神.
• His face became livid with rage as he found my guard impregnable, while blood flowed from a dozen minor wounds upon his face and body. 埃德加·赖斯·巴勒斯. 火星战神.
• That influence, in its last analysis, was simply the power of money: Bertha Dorset's social credit was based on an impregnable bank-account. 伊迪丝·华顿. 快乐之家.
• The rebel position was impregnable against any force that could be brought against its front. 尤利西斯·格兰特. U．S．格兰特的个人回忆录.

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