She was trying to summon up the courage to leave him.

当时她试图鼓起勇气离开他。

How can I summon up his courage?

如何唤起他的勇气？

Summon up your courage and tell the truth.

鼓起你的勇气，说出真相。

The oddest events will summon up memories.

那些非常稀奇古怪的事情会唤起人们的记忆。

You may be able to summon up a few phrases.

或许你能够说上几句。