impregnable

剑桥词典

A building or other place that is impregnable is so strongly built and/or defended that it cannot be entered by force .
（建筑或其他场所）坚不可摧的，固若金汤的
Despite burglar alarms and window locks , homes are never impregnable against determined thieves . 即使家里装上防盗警报器并锁好窗户，也挡不住贼心不死的小偷。
mainly UK
powerful and impossible to beat , especially in sport
（尤指体育运动中）不可战胜的
Surrey have been building up an impregnable lead in this season's County Championship. 在本赛季的全郡锦标赛中，萨里队已经遥遥领先，势不可当。 返回 impregnable