Definition
To summon one's courage and make oneself be brave enough to do something difficult or frightening.
鼓起勇氣
She screwed up her courage and finally voiced her opinion in public.
她鼓起勇氣，終於在公開場合表達了自己的意見。
He had to screw up his courage to face his fears.
他必須鼓起勇氣面對自己的恐懼。
He hesitated for a long time before screwing up his courage to confess his feelings to her.
他猶豫了很久才鼓起勇氣向她表白。