unfathomable

英 [ʌn'fæðəməbl] 美 [ʌn'fæðəməbl]

adj.深得无法到达底部的；莫测高深的；难以了解的

GRE

◉Usage Examples

(1) Under the unfathomable sea, life glows both audibly or mutely.

(2) This requires limitless range and unfathomable depth of vision.

(3) He is frosty and looks unfathomable.

(4) His feeling was confused and drifting, but deep and unfathomable.

(5) The world is beautiful, in many unfathomable ways.

(1) 在深湛的海洋,有声无声地,生命兀自绽放光彩。

(2) 这要求有无限深广的视野。

(3) 他很冷峻，显出一种高深莫测的神态。

(4) 这思绪是散乱而飘浮的，又是幽深而莫测的。

(5) 世界如此美丽，在许多方面深不可测。

◉Usage notes

Unfathomable means impossible to ever understand. For most people, the field of quantum mechanics is unfathomable.

Fathoms are seafaring units of measure equaling about six feet. So something that is unfathomable is also immeasurable, especially when it comes to depth. If your sonar isn't bouncing anything back to you, you're dealing with an unfathomable distance. Metaphorically, unfathomable can refer to something that resembles an abyss, some figurative notion that's so deep you can't even measure it.

◉Collins

1. [ADJ-GRADED 能被表示程度的副词或介词词组修饰的形容词]（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.

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！

2. [ADJ 形容词]（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. [LITERARY 文]

...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.

此刻显得浑浊莫测的黑眼睛