鼓起勇氣

 muster (up) one's courage

call up one's courage

 pluck/ screw up （one's）courage

1.In times of difficulty we must pluck up courage.   我們在困難時必須鼓起勇氣。

2.I shall have to pluck up courage and speak to her about it.  我得鼓起勇氣跟她談這件事。


3.I guess I have to screw up my courage and go to the dentist


4.She screwed up her courage and asked to see the manager.

5.A young musician musters the courage to call up a famous producer