fathomless /ˈfæðəmlɪs/

• 1. 

  ADJ Something that is fathomless cannot be measured or understood because it gives the impression of being very deep, mysterious, or complicated. 深不可测的; 不能理解的

  例：

  ...the fathomless space of the universe.

  ...深不可测的宇宙空间。

  例：

  The silence was fathomless and overwhelming.

  这样的沉静不能测透、侵袭着一切。