Why you let her talk you into doing such a foolish thing is beyond my comprehension (= impossible for me to understand ) .
你怎么会被她说服去做这种蠢事，我实在是无法理解。
n. 理解；包含
containing、
grasp、
understanding、
involved in、
involvement
adj. comprehensive、 comprehensible
adv. comprehensively
vt. comprehend