VOA慢速英语:Two Events Blamed for Dinosaur Deaths(翻译)

1. disappear vi.不见，消失; 不复存在
例句：By means of a clever trick, he made it (seem to)disappear.
他用了个巧妙的手法，把它变没了。

2. fossilize vt.使成化石; 使陈腐
例句：So it will not be an unchanging sign that tends to fossilize and to limit itself and its relations with the surroundings.
因此，它不会是一个将一成不变的、已趋凝固的符号，规范限制自身，以及自己和周围的关系。

3. increase vt. 增加，增大，增多
例句：He exhorted his workers to increase production.
他力劝自己的工人增加生产。

4. observe vt.观察; 研究
例句：All the football match spectators were able to observe orders in the stadium.
球赛观众都能遵守会场秩序。

5. impact vt.撞击; 挤入，压紧
例句：They say they expect the meeting to have a marked impact on the future of the country
他们称他们预期会议对国家的未来会产生显著影响。