BBC在线收听下载:奥巴马白宫演讲称将加强控抢

1. introduce vt.介绍; 引进
例句：Let me introduce myself.
让我自我介绍一下。

2. impatience n.不耐烦; 焦躁; 渴望
例句：Some impatience was exhibited owing to the non-arrival of the speaker.
由于讲演人未到, 听众显得有些不耐烦。

3. prevent vt.预防; 阻止
例句：Atmospheric conditions often prevent observation of stars.
大气的情况常使人们无法观察星星。

4. repeal vt.撤销，废除; 否定
例句：Many voted for the repeal of that property law.
许多人投票赞成废止那项财产法。

5. describe vt.叙述; 描写，形容
例句：We study samples in order to be able to describe populations.
为了了解总体，必须研究样本。

6. evacuate vt.撤离，疏散; 排泄
例句：All people would evacuate the area.
所有人员也都全部撤离这一地区。

7. discuss vt.商量; 讨论，谈论
例句：We’ll discuss these in detail below.
我们将在下面详细讨论。

8. invitation n.招待，邀请; 请柬
例句：Don't decline an invitation to dinner.
不要谢绝吃饭的邀请。

9. export vt.出口，输出
例句：We now export all kinds of industrial products.
我们现在输出各种工业产品。

10. deplete vt.耗尽，用尽; 使枯竭
例句：She had no wish to deplete still further whatever funds he had remaining.
她可不愿意再去花掉他剩下的钱。