to show interest in something, especially a competition or challenge
何かに興味を示す、特に競争や挑戦に (nanika ni kyomi wo shimesu, tokuni kyousou ya chousen ni)
"I decided to throw my hat in the ring and apply for the leadership role."
"私はリーダーシップの役割に応募するためにリングに帽子を投げることに決めました。" (watashi wa **rīdāshippu no yakuwari ni ōbo suru tame ni ringu ni bōshi o nageru** koto ni kimemashita)
in prison
to lose one’s temper completely
to worry a lot about something
to keep your plans or intentions secret
plans are uncertain or not decided yet
to reveal your real character or intentions