make more firm; "Confirm thy soul in self-control!"より堅くする固める
strengthen or make more firm; "The witnesses confirmed the victim's account"強くなるか、より堅くする強化
establish or strengthen as with new evidence or facts; "his story confirmed my doubts"; "The evidence supports the defendant"新しい証拠または事実などで立証する、または補強する裏付ける