1.An impregnable castle in the center of Europe.

成为了欧洲中心坚不可摧城堡。

2.The heights of Kennesaw were impregnable.

肯尼萨山高地是坚不可摧。

3.The sheer cliffs on three sides and the steep summit made the citadel virtually impregnable.

三面陡峭悬崖外加高耸山顶让这座堡垒坚不可摧。

4.It's a stunning example of architectural engineering at altitude, and completely impregnable.

一座非常高地工事可谓坚不可摧。

5.There were no security guards present because they trusted the false technological defenses were impregnable.

没有保安在场，因为他们相信虚假技术防御坚不可摧。

6.The tippler brought his speech to an end, and shut himself up in an impregnable silence.

酒鬼说完以后就无论如都不再开口了。

7.Are these businesses really so impregnable and indestructible?

这些企业真那么坚不可摧吗？机翻

8.Fort Knox was built to be an impregnable fortress.

诺克斯堡成一座坚不可摧堡垒。机翻

9.The bullion depository at Fort Knox was built to be an " impregnable fortress."

诺克斯堡金银存放处成一座“坚不可摧堡垒” 。机翻

10." Ashamed of drinking! " The tippler brought his speech to an end, and shut himself up in an impregnable silence.

“我羞愧我喝酒。”酒鬼说完以后就再也不开口了。

11.One of the secrets of its longevity  was its seemingly impregnable walls.

它长盛不衰秘诀之一是它看似坚不可摧城墙。机翻

12.The keep's formidable walls and defensive features make it a virtually impregnable fortress.

主城堡坚固城墙和防御设施使它成为一座几乎坚不可摧堡垒。机翻

13.How do we open up these gates that look pretty impregnable and impossible to open?

我们如打开这些看起来坚不可摧且无法打开大门？机翻

14.I saw that his position on the old parchment was impregnable.

我看到他在旧羊皮纸上地位是坚不可摧。机翻

15.Around these camps hidden pits and traps were made, so that the positions seemed impregnable.

在这些营地周围，隐藏着深坑和陷阱，使阵地看起来坚不可摧。机翻

16.Furthermore: concerning these last mentioned Leviathans, they have two firm fortresses, which, in all human probability, will for ever remain impregnable.

而且，关于这些最近提到大鲸，它们有两个坚固堡垒，就是尽人类之所能，也将永远牢不可破。

17." If Storm's End is so impregnable, how do you mean to take it" ? asked Malo.

" 风息堡难攻不破，你又怎生奈它？" 莫罗问。

18.There still reverberated in her mind the crashes of the two impregnable citadels of her life, thundering to dust about her ears.

她生活中两个坚不可破堡垒崩溃声音仍在她心中回响，好像在她耳旁轰隆一声坍塌了。

19.Ashamed of drinking, the tibbler brought his speech to an end and shut himself up in an impregnable silence.

那个喝酒人感到羞愧，便结束了演讲，并把自己关在了沉默之中。机翻

20.Reading his books, I'd found an impregnable moral core that both fortified me and challenged me to be better.

阅读他书，我发现了一个坚不可摧道德核心，它既使我坚强，又挑战我变得更好。机翻