慢速英语:US Secret Service Director Resigns

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词汇讲解：

1. committee n.委员会，全体委员
例句：Chairman of the committee was elected by ballot. 
该委员会主任是投票选举的。 

2. arrest vt.逮捕，拘捕
例句：Attempts are being made to arrest the spread of the disease. 
现正设法遏止这种疾病的蔓延. 

3. vehicle n.车辆; 交通工具
例句：This is a mechanically propelled vehicle. 
这是一台机械力推动的车辆。 

4. execute vt.执行; 处死，处决
例句：Simple projects are easy to execute.
因为简单的项目容易执行。

5. require vt.要求; 需要
例句：Another option is to require regular inspections.
另一种选择则是要求进行定期检查。

6. announce vt.宣布; 述说
例句：Please announce to the children that there will be no school this afternoon. 
请通知孩子们今天下午不上课。 

7. protect vt.保护，保卫
例句：Game laws protect wild life. 
狩猎法保护野生动物。