鼓起勇氣(做某事)
pluck up (the) courage (to do sth)
to make yourself do sth even though you are afraid to do it
I finally plucked up the courage to ask her for a date.我終於鼓起勇氣約她出去。
釋義來自《牛津高階英漢雙解詞典》第 9 版