VOA常速英语:Africa Policy Watchers Lose Hope in President Obama

2. disappointment n. 失望, 沮丧；令人失望的人或事物
例句：I went to his talk with great interest, but to my disappointment, nothing very new came forth.
我抱着极大的兴趣去听他的讲话,但令我失望的是讲话中没有什么新东西。

3. raid vt. 袭击
例句：Our troops raided the enemy camp.
我们的部队袭击了敌营。

4. accountable adj. 负有责任的, 应对自己的行为做出说明的
例句：If anything happens to this car, I will hold you accountable.
这辆车如果出什么问题, 我就惟你是问。

5. conduct vt. 控制, 指导，管理，经营；进行；实施；处理
例句：They hired agents to conduct their company.
他们雇请代理人来管理他们的公司。

6. eliminate vt. 排除,消除,消灭
例句：Our goal is to eliminate poverty.
我们的目标是消灭贫困。

7. squash vt. 平定(叛乱等); 镇压; 制服
例句：I squashed him with a sarcastic remark.
我说了一句讽刺的话把他给镇住了。

8. protest v. 声明; 抗议
例句：He protested the decision made by the committee.
他抗议委员会做出的决议。

9. rally v. 集合起来
例句：All the villagers should be rallied to rescue the crops.
应该把全体村民动员起来抢救庄稼。

10. overcome vt. 战胜;克服
例句：The learner of a second language has many obstacles to overcome.
第二语言学习者有许多障碍要克服。