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impregnable 1 AHD[ĭm-prĕgʹnə-bəl] D.J.[ɪmˈpregnəbəl]K.K.[ɪmˈprɛgnəbəl]adj.（形容词）- Impossible to capture or enter by force:固若金汤的：不能被攻占或武力进入的：an impregnable fortress.固若金汤的堡垒
- Difficult or impossible to attack, challenge, or refute with success:无懈可击的：不能或很难攻击、挑战或驳倒的：an impregnable argument.无懈可击的辩论
- Middle English 中古英语
- from Old French imprenable 源自 古法语 imprenable
- in- [not] from Latin in- * see in- 1in- [不] 源自 拉丁语 in- * 参见 in-1
- pregnable [pregnable] * see pregnable pregnable [可攻克的，易受伤害的] * 参见 pregnable
impregnable 2 AHD[ĭm-prĕgʹnə-bəl] D.J.[ɪmˈpregnəbəl]K.K.[ɪmˈprɛgnəbəl]adj.（形容词）- Capable of being impregnated.可以受孕的
- impregn(ate) impregn(ate)
- -able -able
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