VOA常速英语:Medical Community Debates How Much Salt Is Too Much

词汇讲解：

1. diet n. 日常饮食，日常食物
例句：An unbalanced diet has an adverse effect upon health. 
饮食摄取不均衡会对健康产生不良的影响。

2. controversy n. 公开辩论, 论战, 争论
例句：The new law has caused much controversy.
新法律引起很多争论。

3. prestigious adj. 受尊敬的, 有声望的, 有威信的
例句：Her first novel won a prestigious literary prize.
她的第一部小说就获得了一个颇具声望的文学奖。

4. contradict v. 反驳, 否认…的真实性
例句：He contradicted his own statement.
他否认他自己说过的话。

5. participant n. 参加者， 参与者
例句：The participants were mainly young people.
参加者大部分是年轻人。

6. hail vt. 致敬; 向…欢呼
例句：The people lined the streets to hail the returning heroes.
人们夹道欢迎凯旋的英雄们。

7. mount vt. 增加; 上升; 逐步增加
例句：Social problems in modern society are mounting.
现代社会问题日益增加。

8. echo vt. 重复; 随声附和
例句：He is always echoing what his boss says.
他老是重复他老板的话。

9. conclusive adj. 令人信服的,确凿的
例句：They produced some fairly conclusive evidence.
他们提供了一些相当确凿的证据。

10. upper adj. 较高的, 上部的
例句：He is a member of the upper house of legislature.
他是上议院的成员之一。

11. consume vt. 消耗, 消费, 耗尽
例句：It is against the law for minors to consume alcohol.
未成年的人喝酒是违法的。

12. confuse vt. 使困惑, 把…弄糊涂
例句：They asked so many questions that they confused me.
他们问了许多问题, 都把我弄糊涂了。