impenetrable
adjective uk/ɪmˈpen.ɪ.trə.bəl/ us/ɪmˈpen.ə.trə.bəl/
不能看透的;不能穿过的
impossible to see through or go through
Outside, the fog was thick and impenetrable. 外面的雾很浓，什么也看不见。
an impenetrable barrier 无法跨越的障碍
Synonyms: impermeableimpervious (SUBSTANCE)
Compare: waterproof adjectivewatertight (NO WATER)weatherproof adjective
Opposite: permeable
费解的，无法理解的
impossible to understand
Some of the lyrics on their latest album are completely impenetrable. 他们最新专辑中的一些歌词让人完全看不懂。