柯林斯詞典petrous /?p?tr?s, ?pi?-/ 1. ADJ denoting the dense part of the temporal bone that surrounds the inner ear 顳骨巖部的[anatomy] 返回 petrous劍橋詞典relating to the very hard section of bone surrounding the inner ear 顳骨巖部的 the petrous bone 顳骨巖部 返回 petrous