VOA慢速英语:In Combating Obesity, a 12-Year-Old Leads by Example

1. require vt.需要; 要求; 想要
例句：My duties require clearer definition.
我的职责需要更清楚的说明。

2. involvement n.牵连，参与; 加入
例句：He was convinced that government involvement would ruin the company.
他确信政府的干预会把公司毁掉。

3. impact vt.撞击; 挤入，压紧
例句：Imports of stainless products continued to impact profits.
进口的不锈钢产品继续冲击利润。

4. change vt.改变，变更; 交换
例句：People like to change things around to suit themselves.
人们喜欢改变周围的事物，使之适合自己。

5. recess n.休息; 隐蔽处
例句：I hope you enjoyed a short recess from our hard work.
工作很辛苦，我希望你们在短暂的休息期间过得很愉快。

6. spread vt.展开; 伸开
例句：Clouds spread across the moon, fading it out.
云朵飘过月亮, 逐渐把它隐没。