adj.难以理解的，莫测高深的，(表情)难以琢磨的，微妙的

The depth of her grief was unfathomable to those who didn't know her well.
她的悲痛深得让那些不怎么了解她的人无法理解。
The mysteries of the universe are unfathomable to the human mind.
宇宙的奥秘对人类的思维来说是无法理解的。
His generosity was unfathomable; he gave away millions to charity without hesitation.
他的慷慨无以言表，他毫不犹豫地捐出了数百万给慈善机构。
The complexity of the human brain is unfathomable, even to the most brilliant scientists.
人脑的复杂性即使是对于最杰出的科学家来说也是难以理解的。
The artist's creativity seemed unfathomable; each new piece was more imaginative than the last.
这位艺术家的创造力似乎无穷无尽，每一件新作品都比上一件更具想象力。
The loss of their child left the parents with an unfathomable pain that no words could console.
失去孩子给这对父母带来了无法抚慰的痛苦，任何言语都无法安慰。
The beauty of a starry night sky is unfathomable, leaving us in awe of the cosmos.
星空的美丽是无法估量的，让我们对宇宙感到敬畏。
Her capacity for forgiveness was unfathomable; she forgave her attacker after years of torment.
她的宽恕能力令人难以理解，经历了多年的折磨后，她原谅了攻击者。
The unfathomable depths of the ocean conceal countless undiscovered species.
海洋的深邃隐藏着无数未被发现的物种。
The emotions that accompanied his recovery from a life-threatening illness were unfathomable to those who had never experienced such trauma.
他从生死攸关的疾病中康复所经历的情感，对于那些从未经历过如此创伤的人来说是无法理解的。