exploit n. 功勋，业绩

　　---------heroic act; daring deed; feat

　　Robert E. Peary won worldwide fame foe his exploits as an Arctic explorer.

　　fortitude n. 坚韧

　　-------courage in facing danger, hardship or pain; endurance; bravery; pluck; backbone; valor

　　The captain showed remarkable fortitude in continuing to lead his men despite a painful wound.

　　audacious adj. 1.勇敢的 2.无礼的

　　-------1. bold; fearless daring 2. too bold; insolent; impudent

　　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.

　　dauntless adj. 勇敢的

　　------fearless; intrepid; very brave; valiant

　　The frightened sailors wanted to turn back, but their dauntless leader urged them to sail on.

　　indomitable adj. 不屈不挠的

　　-----incapable of being subdued; unconquerable; invincible

　　Columbus had an indomitable belief that he would reach land by sailing west.

　　plucky adj. 勇敢的

　　-------courageous; brave; valiant; valorous

　　Though defeated, our team put up a plucky defense against their taller and huskier opponents.

　　rash adj. 冲动的

　　-----overhasty; foolhardy; reckless; impetuous; taking too much risk

　　When a person loses his temper, he may say or do something rash and regret in afterwards.