Hxen.com's tips：Every day persisted can learn English well!-->■Learn English Everyday■
butterfly – n. a way of swimming in which the swimmer's face is in the water and the arms move together in a circular motion while the legs kick up and down
medal – n. a piece of metal often in the form of a coin with designs and words in honor of a special event or an achievement
tarnish – v. to damage or ruin the good quality of a person's reputation
drunk driving – n. the act of driving a vehicle while drunk
rehabilitation – n. the process of bringing someone back to a normal, healthy condition after an illness, injury or drug problem
freestyle – n. a swimming race in which the competitors are allowed to use different styles or methods
