To spend all your time studying
勉強に全ての時間を費やす (benkyo ni subete no jikan o tsuiyasu)
"He buried himself in books before the finals."
"彼は試験前に本に没頭した。" (kare wa shiken mae ni hon ni bottou shita)
a person who spends a lot of time sitting and watching TV
feeling relaxed and at ease without stress or worry
to become very tired and lose motivation due to overwork
to transition smoothly into something
to function perfectly or very effectively
to improve one's position, typically in a career or personal...
