No monarch in his impregnable fortress is more secure than the cony in his rocky burrow.(在巩固城堡中的王并不会比在岩石洞穴中的沙番更安全。)
The team built up an impregnable 5-1 lead.(这个队以5:1的绝对优势领先。)
You don't see the moose in the forest, and you don't see the mountain as a humble and impregnable expression of antiquity.(你不会看到森林中的驼鹿，也欣赏不到古老的山峦展现出来的谦逊朴实和坚定不移。)
Fundamentally, he believes that creating impregnable tickets is extremely difficult, if not impossible.(从根本上，他相信，创造出坚不可摧的彩票是极其困难的，如果不是不可能的话。)
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。)
Only in this way can you be in an impregnable position for good.(也只有这样，你才能永远立于不败之地。)
The old Dutch fort with its thick high walls looks virtually impregnable.(该座荷兰老城堡城墙又高又厚，看上去固若金汤。)
The failure of the eradication programme created a belief, held by many, that malaria was impregnable to any kind of frontal attack.(消灭规划的失败令人产生一种信念，许多人均抱持这种信念，即任何正面攻击都无法击溃疟疾。)
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。)
Over time Nansen came to "laugh at the ice; we are living as it were in an impregnable castle."(随着时间的推移，南森开始“嘲笑冰层”，说“我们就像住在一座坚不可摧的城堡里。”)
