summon up
Summon up means the same as summon.
Painfully shy, he finally summoned up courage to ask her to a game.
尽管他非常腼腆,最终还是鼓起了勇气邀她去看比赛。
summons , summoning , summoned
If you summon someone, you order them to come to you.
Howe summoned a doctor and hurried over.
豪叫了一位医生,匆忙赶了过去。
Suddenly we were summoned to the interview room.
突然我们被叫进了面试房间。
If you summon a quality, you make a great effort to have it. For example, if you summon the courage or strength to do something, you make a great effort to be brave or strong, so that you will be able to do it.
It took her a full month to summon the courage to tell her mother.
她用了整整一个月的时间才鼓起勇气告诉了母亲。