词汇讲解：
1. prosperity n. 兴旺, 繁荣
例句：The new agreement raised hopes for conditions of prosperity and harmony.
新的协议唤起了人们对繁荣与和谐前景的期望。
2. affluence n. 富裕
例句：There is a lot of affluence in this part of the state because it has many businesses.
这个州的这一部分相当富有, 因为它有很多商行。
3. surge n. 激增
例句：It failed to stimulate a surge of investment in industry.
这没有能刺激工业投资的激增。
4. specific adj. 具体的, 特有的, 特定的
例句：We haven't fixed a specific date for our meeting.
我们会议的具体日期还没有定下来。
5. purchase vt. 购买
例句：He purchased this stamp at an auction.
他在拍卖会中购得这枚邮票。
6. decline vi. 下降,下跌;减少;衰退,衰落
例句：As one grows older one's memory declines.
人的记忆力随着年龄增长而衰退。
7. drag n. 累赘, 障碍
例句：She loves her family, but they're a drag on her career.
她热爱自己的家庭, 但家庭却是她事业的拖累。
8. peer n. 同辈; 同龄人
例句：As peers, we should help each other.
作为同龄人, 我们应该互相帮助。
9. awareness n. 察觉;觉悟;意识
例句：Environmental awareness has increased over the years.
这些年来人们的环境意识增强了。
10. obese adj. 极为肥胖的
例句：Being obese and lazy is dangerous to health.
又胖又懒危害健康。
