Courage：exploit 功勋；fortitude 坚毅；audacious 勇敢的、无理的；dauntless 勇敢的；indomitable 不屈不挠的；plucky 勇敢的；rash 冲动的。
Robert E. Peary won worldwide fame for his exploits as an Arctic explorer.
The captain showed remarkable fortitude in continuing to lead his men despite a painful wound.
Risking serious injury, the outfielder made an audacious leap against the concrete wall and caught the powerfully hit ball.
After we had waited for about twenty minutes, an audacious freshman came along and tried to get in at the head of our line.
The frightened sailors wanted to turn back, but their dauntless leader urged them to sail on.
Columbus had an indomitable belief that he would land by sailing west.
Though defeated, our team put up a plucky defense against their taller and huskier opponents.
When a person loses his temper, he may say or do something rash and regret it afterwards.