summon up courage

例句：

1. 1.The general ordered his soldiers to summon the enemy's forces.
   将军命令他的士兵们召唤敌人的部队。
2. 2. The captain called for volunteers to join the search and rescue team.
   队长号召志愿者加入搜救队伍。
3. 3. She roused herself from her sleep and got up to make breakfast.
   她从睡梦中醒来，起床准备早餐。