VOA慢速英语:In US, an Epidemic of Prescription Drug Abuse

2. overdose n. 过量用药
例句：He took an overdose and was in the hospital for weeks.
他用药过量, 在医院住了好几个星期。

3. approval n. 批准, 认可
例句：The new proposals have won the approval of the board.
新建议得到董事会的认可。

4. triple v. (使)增至三倍
例句：In the past five years the company has tripled its sales.
过去五年中,该公司销售量增至三倍。

5. addict n.有…瘾的人；入迷的人
例句：He is a heroin addict.
他是个吸海洛因成瘾的人。

6. appear vi. (在公开场合、当众)露面
例句：She appears on TV at seven every evening.
她每晚7点在电视上露面。

7. retire v. 退职; 退役; (使)退休
例句：Some of the older workers were retired early.
有些老工人提前退休了。

8. chronic adj. 长期的；慢性的；长期的,不断的
例句：The economy flourishes despite a fairly high rate of chronic unemployment.
尽管失业率居高不下,经济仍在蓬勃发展。

9. solution n. 解决, 解答, 解决办法
例句：The solution to the problem required many hours.
解决这个问题需要好几个小时。

10. registry n.档案室;登记簿存放处;注册处；挂号处
例句：The registry holds records of all major operations.
登记处有所有重大手术的记录。