adj.深得无法到达底部的；莫测高深的；难以了解的
Under the unfathomable sea, life glows both audibly or mutely. 在深湛的海洋,有声无声地,生命兀自绽放光彩。
This requires limitless range and unfathomable depth of vision. 这要求有无限深广的视野。
His feeling was confused and drifting, but deep and unfathomable. 这思绪是散乱而飘浮的，又是幽深而莫测的。
The world is beautiful, in many unfathomable ways. 世界如此美丽，在许多方面深不可测。
He, for some unfathomable reason, wanted to be with me. 他因为某个不得而知的理由，想和我在一起。
