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impregnable

英[ɪm'pregnəb(ə)l] 美[ɪm'prɛɡnəbl]

英英释义实用场景例句

adj. 无法攻取的；不受影响的；要塞坚固的；可以受孕的

英英释意

1. able to withstand attack;: "an impregnable fortress"; "fortifications that made the frontier inviolable"

2. impossible to take by storm