adjective🔗Share難攻不落の, 難攻不抜の(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. "城壁は難攻不落だったので、侵略者は侵入を諦めた。militaryarchitectureChat with AIVocabulary GamePractice Reading
adjective🔗Share妊娠可能なCapable of being impregnated."The fortress walls were impregnable, making it impossible for the enemy to enter. "要塞の壁は難攻不落で、敵の侵入を不可能にしていた。physiologysexbodyChat with AIVocabulary GamePractice Reading
