to work hard on something for a long period
何かに長時間一生懸命働く (nanika ni chō jikan isshōkenmei hataraku)
"She grinded away at her studies to pass the exam."
"彼女は試験に合格するために一生懸命勉強しました。" (kanojo wa shiken ni gōkaku suru tame ni isshōkenmei benkyō shimashita)
to aim for something very ambitious
to use authority to make people work harder or obey rules
Having a goal without a clear plan makes it unlikely to succ...
to make exceptions or not strictly follow the law or rules
to persuade someone by discussion
to be upset about something that cannot be changed
