VOA慢速英语:Mouth X-Rays and the Brain; Infected Gums Do Not Cause Heart Attacks

1. involve vt. 使卷入,连累
例句：That's no concern of mine. I'm not involved.
那与我无关,我未卷入。

2. relationship n. 关系,关联
例句：The children learned about the relationship between the moonand the tides.
孩子们弄懂了月球与潮汐的关系。

3. scare vt. 惊吓,使恐惧
例句：They are scared that the ship might be wrecked.
他们怕船失事。

4. conversation n. 会话,谈话
例句：He got into conversation with his neighbor.
他开始与邻居交谈起来。

5. reduce vt. 减少;缩小
例句：The decision to reduce pay levels incensed the work-force. 
降低工资的决定激怒了工人. 

6. proof n. 证据;物证
例句：He has further proof of this.
他对此有进一步的证据。

7. evidence n. 证据;证词
例句：The evidence is very shaky.
这证据相当靠不住。

8. infectious adj. 传染的;传染性的
例句：Their enthusiasm was infectious. 
他们的热情有感染力。