VOA慢速英语:American History: Social Revolution in the 1960s

1. symbol n. 象征,标志
例句：The white bird is a symbol of freedom.
这白色的鸟是自由的象征。

2. murder n. 谋杀,凶杀
例句：He was accused of murder.
他被指控犯了杀人罪。

3. protest vi. 抗议,反对
例句：Crowds of pacifists protested against the war.
成群的和平主义者抗议这场战争。

4. influential adj. 有影响的;有权势的
例句：Influential friends helped him to get a good job.
有权势的朋友们帮他弄到一份美差。

5. violence n. 暴力,暴力行为
例句：The dictator ruled with violence.
独裁者实施暴政。

6. satisfaction n. 满意,满足
例句：He smiled in satisfaction when he won the race.
他赢得赛跑后满意地笑了。

7. service n. 服务;效劳
例句：He died in the service of his country.
他为国捐躯。

8. approve vt. 赞成,同意;赞许
例句：The professor does not approve the government's foreign policy.
那位教授不赞成政府的外交政策。

9. investigate vt. 调查,研究
例句：The detective was sent to investigate the crime.
那位侦探被派去调查该罪行。

10. effort n. 努力,尽力
例句：I decided to make one more effort.
我决定再作一次努力。