慢速英语:U.S. Senator Rand Paul Announces Presidential Campaign

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词汇讲解：

1. 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。 

2. cause vt.成为…的原因; 导致
例句：The result of doing so would only cause misery. 
这样做的结果只能导致灾难。 

3. cancel vt.取消，注销
例句：You cannot cancel the order unilaterally. 
你们不能单方面取消订货。 

4. overthrow vt.打倒，推翻; 使屈服
例句：They have been scheming to overthrow the government. 
他们一直在策划推翻政府。 

5. opposition n.（强烈的）反对，敌对; （政府的）反对党
例句：They planned to crush down all opposition. 
他们策划镇压一切反动力量。 

6. restore vt.归还; 交还; 使恢复
例句：The army was called in to restore law and order to the place. 
军队被召来恢复该地治安。