例文・使い方で印象づける「impregnable」の覚え方
スポンサーリンク...“Belle-Isle is impregnable... 
Alexandre Dumas, Pere 「The Man in the Iron Mask」
... The thorn boma round it wasthe strongest and most impregnable that the Mosula could construct...
Edgar Rice Burroughs 「The Beasts of Tarzan」
... Impregnable city ofPal-ul-don—alone of all the cities it has never been entered by afoeman since it was built there while Jad-ben-Otho was a boy...
Edgar Rice Burroughs 「Tarzan the Terrible」
...Its tough, armoredhide was impregnable to their knife thrusts while their thrown clubsrattled from it as futilely as if hurled at the rocky shoulder ofPastar-ul-ved...
Edgar Rice Burroughs 「Tarzan the Terrible」
...He could not make out how he was caught and checked in every effort, meeting, it seemed, a barrier of iron impregnable in rest...
Anthony Hope 「Rupert of Hentzau」
...If they wish the trade to continue, let it bebased on the impregnable ground that the merchants want the money,and not on a fantastic dream that is too silly to deceive even achild that knows birds...
William T. Hornaday 「Our Vanishing Wild Life」
...The enemy will succeed in penetrating the impregnable fortress; each foe has his special tactics, contrived with appalling skill...
J. Henri Fabre Alexander Teixeira de Mattos 「The Mason-bees」
...To resist the rigours of the winter, this surface must be impregnable...
J. Henri Fabre 「Bramble-bees and Others」
...On the southern portion of this impregnable site and grouped about apoint where nearly the whole drainage of the mesa top collects, arefound the village remains...
Victor Mindeleff and Cosmos Mindeleff 「A Study of Pueblo Architecture: Tusayan and Cibola」
...They had no great name touphold; no riches to expend in impregnable walls and towers...
Elise Whitlock Rose 「Cathedrals and Cloisters of the South of France, Volume 1」
...An impregnable fortress of spines, the thing drifted slowly awaythrough the twisted loops of cable...
Various 「Astounding Stories of Super-Science September 1930」
..."You know that amphibian city is almost impregnable because humans canhardly live long enough under the water to get into it, let alonefight under water as the frog-men can...
Various 「Astounding Stories of Super-Science, August 1930」
...Saret Balisle seemedto be impregnable...
Arthur J. Burks 「The Mind Master」
...This ancient and impregnable fact has been ignored...
Dr. D.M. Brooks 「The Necessity of Atheism」
...Those equipped with ladders of science have so often scaled thewalls which surround cities of ignorance that they march forward in thesure faith that none of Nature's battlements are impregnable...
Dr. D.M. Brooks 「The Necessity of Atheism」
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