VOA慢速英语:Walking: The 'Wonder Drug'

词汇讲解：

1.explain vt.讲解，解释
例句：Not every judge, however, has the ability to explain the law in simple terms
然而，不是每个法官都能用简单的语言来解释法律。

2.volunteer n.志愿者，志愿兵
例句：She now helps in a local school as a volunteer three days a week
目前她在当地的一家学校做志愿工作，一周去3天。

3.schedule n.时刻表，进度表; 清单
例句：He has been forced to adjust his schedule
他被迫调整了自己的日程安排。

4.improve vt. 提高（土地、地产）的价值; 利用（机会）; 改善
例句：Both the texture and condition of your hair should improve
你头发的发质与健康状况都应改善。

5.solve vt.解决; 解答; 解释
例句：Their domestic reforms did nothing to solve the problem of unemployment
他们的国内改革未能解决失业问题。