VOA慢速英语:巴基斯坦前军事统治者穆沙拉夫被判处死刑

convict - v. to prove that someone is guilty of a crime in a court of law

revenge - n. the act of doing something to hurt someone because that person did something that hurt you

institution - n. an established organization

challenge - v. to say or show that (something) may not be true, correct, or legal

impunity- n. freedom from punishment, harm, or loss — usually used in the phrase with impunity