adjective🔗Share无法穿透的，不能穿透的. Not penetrable."The fortress is impenetrable, so it cannot be taken."这座堡垒坚不可摧，根本无法攻破。materialphysicsChat with AIVocabulary GamePractice Reading
adjective🔗Share难以理解，高深莫测，费解。 Incomprehensible; fathomless; inscrutable."The teacher's explanation of quantum physics was impenetrable; no one understood a single word. "老师对量子物理的解释高深莫测，没人听懂一个字。languagemindphilosophyliteraturecommunicationqualityabstractChat with AIVocabulary GamePractice Reading
adjective🔗Share难以穿透, 不可渗透的 Opaque; obscure; not translucent or transparent."When night falls, she cloaks the world in impenetrable darkness."当夜幕降临，她用深不可测的黑暗笼罩着世界。appearancequalityChat with AIVocabulary GamePractice Reading
