BBC在线收听下载:博尔特首次出场参加100米比赛

1. appearance n. 出现;显露
例句：John's appearance in the doorway was welcomed with shouts.
约翰出现在门口时,大家高喊着欢迎他。

2. exit n. 出口,通道
例句：There is only one exit from the theater.
这家戏院只有一个出口处。

3. challenge vt. 向...挑战
例句：I challenged him to show his proof.
我要他拿出证据。 

4. expect vt. 预计...可能发生
例句：He expected to finish the work by March.
他预期三月份完成这项工作。 
 
5. investigate vt. 调查,研究
例句：The detective was sent to investigate the crime.
那位侦探被派去调查该罪行。

6. resolution n. 决心;决定
例句：Worst of all, he had no hope of shaking her resolution.
最糟的是,他知道无法动摇她的决心。

7. negotiate vi. 谈判,协商,洽谈
例句：The government will not negotiate with the terrorists.
政府决不与恐怖分子谈判。