a person who keeps their skills or plans secret until an important moment
重要な瞬間まで自分のスキルや計画を秘密にする人 (jūyōna shunkan made jibun no sukiru ya keikaku o himitsu ni suru hito)
"Nobody expected her to win; she was a dark horse."
"誰も彼女が勝つとは思っていなかった; 彼女はダークホースだった。" (dare mo kanojo ga katsu to wa omotte inakatta; kanojo wa **dāku hōsu** datta.)
advantage gained from a political situation
to aim for something that is difficult or seemingly impossib...
to explain something in a very clear and concise way
to be upset about something that cannot be changed
to adjust oneself to new situations or changes
to make small adjustments to improve performance