wrap (one's) head around (something)

Translations
осознать, понять (что-то)
I can't wrap my head around the fact that he's leaving.
Я не могу осознать тот факт, что он уходит.
Definitions
To understand or come to terms with something that is complex, confusing, or difficult to comprehend.
Words
head

noun
голова
wrap

verb
заворачивать
around

adverb
вокруг