adj. 难攻破的；坚固的，坚定的。 an impregnable argument 毫无破绽的议论。 an impregnable belief 坚定不移的信念。 an impregnable bulwark 坚不可摧的堡垒。 impregnable virtue 坚贞不屈的情操。 adv. -bly ,-bility , -ness n. adj. 有受精[怀孕]可能的。
incapable of being overcome, challenged or refuted; "an impregnable argument"; "impregnable self-confidence" 同义词：inexpugnable,
capable of conceiving 同义词：conceptive,
immune to attack; incapable of being tampered with; "an impregnable fortress"; "fortifications that made the frontier inviolable"; "a secure telephone connection" 同义词：inviolable, secure, strong, unassailable, unattackable,
例句与用法
1.
On this problem, she was impregnable . 在这个问题上，她是坚不可摧的。
2.
The lawyer won his case with an impregnable argument . 律师以无可辩驳的论据打赢了那场官司。
3.
So he shut himself up in his castle, whose impregnable strength was such as defied a siege . 所以他把自己关在他的城堡里，那城堡盖得牢不可破，经得起围攻。
4.
Nothing but an impregnable simplicity of nature, strengthened by christian faith, could have kept him from it . 只是由于她坚贞不移的纯朴本性，加上宗教信仰的力量，才使他抵住了这种诱惑。
5.
- how does it feel ? - my defense is impregnable -感觉如何？ -我的防御无懈可击。
6.
How does it feel ? - my defense is impregnable 感觉如何？ -我的防御无懈可击。
7.
Can he win the impregnable quadrilateral 他能否赢得大满贯？
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