VOA慢速英语:Another World, Underground: Carlsbad Caverns National Park

1. explore vi.勘查， 探测
例句：Give yourself permission to explore.
给自己探索的机会。

2. explain vt. 讲解，解释
例句：Consider using pictures to explain ideas.
尽量使用图片来进行说明。

3. spend vt. 用钱，花钱
例句：Spend time thinking about it.
花点时间来思考这个问题。

4. imagine vt.想，设想
例句：I did not imagine that you would sink to cheating. 
我没想到你会堕落到去行骗。 

5. discover vt.发现; 碰见
例句：Did the chinese discover america?
中国人曾经发现美洲吗？

6. realize vt.实现; 了解
例句：I also realize they are fragile.
我同时认识到她们也有脆弱的一面。

7. exhibition n.陈列，展览
例句：The exhibition was a huge success.
这个展览获得了巨大的成功。

8. establish vt.建立，创建
例句：It has taken decades for the fed to establish its independence.
美联储花了几十年时间才确立了独立性。