VOA慢速英语:No National Standards: A Strength or Weakness of US Schools

词汇讲解：

1. tradition n. 传统；惯例
例句：It is a tradition that women get married in long white dresses in that area.
在那个地区女子结婚时穿白色长礼服是个惯例。

2. limit n. 限度;限制;极限
例句：He knows his own limits.
他自知能力有限。

3. adopt vt. 采用, 采纳, 采取
例句：The factories have adopted the newest modern technology.
那几家工厂采用了现代的最新技术。

4. approve vt. 批准, 通过
例句：The minister approved the building plan.
部长批准了该建筑计划。

5. trust v. 相信; 信任
例句：I can't trust what you say.
我不能相信你的话。

6. mandate n. 命令,指令; 授权,委任
例句：The government has a mandate from the people to increase taxes.
民众授权政府增加税收。

7. improve v. 改善, 改进, 提高
例句：If he can keep from smoking for a month or two his health will improve.
他要是能一两个月不抽烟的话, 他的健康一定会有起色。

8. issue n. 问题；议题；争议，争端，争论点
例句：There was no issue at all between us.
我们之间毫无争议。

9. benefit n. 利益,好处;优势
例句：The new hospital will be a great benefit to the town.
新建成的医院将给全城带来莫大好处。

10. involvement n. 参与;加入;插手
例句：He has tried to play down his involvement in the affair.
他极力淡化与该事的瓜葛。

11. objective n. 目标; 目的
例句：They failed to carry out their objectives.
他们没有实现自己的目标。