To start thinking carefully about something
何かについて真剣に考え始める (nanika ni tsuite shinken ni kangae hajimeru)
"It’s time to put your thinking cap on for the quiz."
"クイズのために真剣に考える時間だ。" (kuizu no tame ni shinken ni kangaeru jikan da)
the most advanced or innovative
increasing or growing in value or number
to criticize someone unfairly; to speak badly about someone
to remain behind or hesitate to act
the time for something or someone has ended
to work very hard without rest
