proven effective through experience or hardship
経験や困難を通じて効果的と証明された (keiken ya konnan o tsuujite koukateki to shoumei sareta)
"She’s a battle-tested leader who knows how to stay calm under pressure."
"彼女はプレッシャーの下で冷静さを保つ方法を知っている経験豊富なリーダーです。" (kanojo wa puresshaa no shita de reiseisa o tamotsu houhou o shitteiru keiken houfu na riidaa desu)
To be very sure or confident about something.
to delay dealing with something until later
to remain persistent and determined in difficult circumstanc...
showing strong jealousy
to gradually become more comfortable with someone or somethi...
to gain someone's confidence through actions