1ADJ-GRADED (事物)高深莫测的,深奥的 If you describe something as unfathomable, you mean that it cannot be understood or explained, usually because it is very strange or complicated. (事物)高深莫测的,深奥的
For some unfathomable reason, there are no stairs where there should be.
不知什么原因,本该有楼梯的地方却没有。
How odd life was, how unfathomable, how profoundly unjust.
生活多么离奇,多么莫测,多么不公啊!
2ADJ (人或表情)难以捉摸的 If you use unfathomable to describe a person or the expression on their face, you mean that you cannot tell what they are thinking or what they intend to do. (人或表情)难以捉摸的 [literary]
...a strange, unfathomable and unpredictable individual.
一个古怪、难以捉摸、反复无常的人
...the dark eyes that right now seemed opaque and unfathomable.