summon
v. 召唤；召集（会议）；传唤，传讯（出庭）；迫切地要求（帮助）；鼓起（勇气），振作（精神）
例句
She was trying to summon up the courage to leave him.
当时她试图鼓起勇气离开他。
《牛津词典》
I punched the button to summon the elevator.
我按电钮叫电梯。
I couldn't even summon the energy to get out of bed.
我甚至连下床的力气都没有。
