dark layer meaning in English

暗层；深色层
深色层

These are formed from a zone containing larger vessel elements produced by the cambium in the spring ( lighter layer ) , followed by a zone containing smaller vessel elements ( darker layer ) produced during the late summer
春季，形成层活动旺盛，形成的次生木质部细胞，管径大而壁厚，色泽较淡；夏末，形成层活动逐渐减弱，形成的次生木质部细胞，管径小而壁薄，色泽较深。
Since the past masters are no longer with us , a living master is the key to experiencing this truth and to contacting the divine sound that pierces the dark layers of consciousness to uplift the soul to a supremely blissful spiritual reality within us all , where , we are told , the light of millions of lamps of sun and of moon burn eternally
既然过去的明师已经离开了我们，那么唯有在世明师能使我们体验真理接触神圣音流，穿透我们意识中的黑暗面，带领我们到达内在无上喜乐的灵性境界那里，有亿万盏日月明灯永放光芒。