impregnability的意思|示意
美 / ɪmpreɡnə'bɪlɪtɪ /
英 / ɪmpreɡnə'bɪlɪtɪ /
n. 攻不破，不受影响
impregnability相关例句
It was the enemys boast of impregnability that caused their own defeat.
敌人自我吹嘘战无不胜,这最终导致了他们自己的失败.
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