VOA慢速英语:Christmas 2009 in America: A Joyful Season in Not So Joyful Times

例句：He was excited and joyful at the success.
      他因成功而激动欣喜。

2.exchange vt.交换,调换,兑换;交流,交易

例句：They appointed a place to exchange experience.
      他们约定一个地方交流经验。

3.appreciate vt.欣赏,鉴赏;正确评价,鉴别;感谢,感激

例句：I appreciate the effort, but the method you used isn't correct.
      你的努力让我感动，但是你用的方法是不正确的。

4.revise vt.校订,修正,校正

例句：The revised edition of the book is now out of print.
      这本书的修订本已售完。

5.indication n.指示,象征,象征物

例句：He gave every indication of being a fool.
      他处处显示出是个傻瓜。

6.adopt v.采纳,采用;正式通过;领养

7.overflow vi.(使)泛滥,(使)溢出,(使)充溢

例句：Continuous rainstorms might cause the flood to overflow the bank.
      连日暴雨使大水有漫过堤围的危险。