To spend all your time studying
Seine ganze Zeit mit Lernen verbringen (zaine ganze tsait mit lernen ferbringen)
"He buried himself in books before the finals."
"Er vergrub sich vor den Prüfungen in Bücher." (er fergrub zikh for den prufungen in buher)
to write something quickly for later use
to introduce or create new concepts or methods
to rely on a single plan or source of success
someone who is easy to understand or very honest
a state of mental and emotional calmness
To move or pass quickly; sometimes used humorously.