VOA常速英语:Obama Urges Efforts to Enhance Math, Science Education

例句：There was a lot of talent in this city.
      在这个城市里有很多人才。

2.contraption n.奇巧的设计;装置

3.underscore vt.划线于…下,强调

4.challenge vt.向…挑战,要求,怀疑

例句：He knew he would be challenged at the airport.
      他知道在机场会受到盘问。

      He ignored the sentry's challenge to halt.
      他不理睬哨兵喝令止步的盘问。

5.boost vt.推进,提高,捧场,促进

例句：We need a holiday to boost our spirits.
      我们需要休假以激发士气。

      These changes will help to boost share prices.
      这些变化将有助于提高股票价格。

6.embrace v.欣然接受，乐意采纳

例句：She embraced my offer to go to the hospital.
      她接受了我的建议去看医生。

7.initial a.最初的,开始的

例句：The initial talks were the base of the later agreement.
      最初的谈判是随后达成协议的基础。

8.showcase v.陈列，展示

9.outperform vt.做得比…更好;胜过

例句：The growth of that company has outperformed all of its competitors.
      那家公司的发展超过了它所有的竞争对手。

10.recognize vt.认出,认可,承认,公认,赏识

例句：Your services must be duly recognized.
       你的功劳必须受到充分的嘉奖。