adjective🔗Share坚不可摧，牢不可破。 (of a fortress, wall, etc., also used figuratively) Too strong to be penetrated."The castle walls were impregnable, so the invaders gave up trying to enter. "城堡的城墙坚不可摧，所以入侵者放弃了尝试进入。militaryarchitectureChat with AIVocabulary GamePractice Reading
adjective🔗Share能被穿透的，可受孕的 Capable of being impregnated."The fortress walls were impregnable, making it impossible for the enemy to enter. "要塞的墙壁是可以被穿透的，这使得敌人不可能进入（怀孕）。physiologysexbodyChat with AIVocabulary GamePractice Reading
