early 15c., imprenable "impossible to capture," from Middle French imprenable "invulnerable," from assimilated form of in- "not, opposite of" (see in- (1)) + Old French prenable "assailable, vulnerable" (see pregnable). With intrusive -g- 16c., on model of deign, reign, etc. Related: Impregnability.
双语例句
1. The Bundesbank's seemingly impregnable position has begun to weaken.
德意志联邦银行看似不可撼动的地位开始削弱了。
来自柯林斯例句
2. In those impregnable mountains, the guerrillas could hold out for years.
在那些易守难攻的大山里，游击队可以坚持很多年。
来自柯林斯例句
3. The old Dutch fort with its thick high walls looks virtually impregnable.
古老的荷兰城堡城墙又厚又高，看起来几乎固若金汤。
来自柯林斯例句
4. The team built up an impregnable 5-1 lead.
这个队以5:1的绝对优势领先。
来自《权威词典》
5. The lawyer won his case with an impregnable argument.