a cry to arms.

• 鼓舞士气

a cry to arms.的用法和样例：

例句

1. The Sidewinders were convinced as a morale booster.
   响尾蛇导弹不过是用来充当鼓舞士气的工具罢了。
2. The team was given a pep talk on the morning of the big match.
   运动队在大赛当天早晨听了一次鼓舞士气的讲话。