VOA慢速英语:Considering National Education Standards

例句：The sun lowers in the west.
       太阳从西边落下。

vt.削弱; 削减

例句：A cold had lowered her resistance.
     感冒已削弱了她的抵抗力。

2.clearly adv.明确地,清楚地

例句：a clearly defined role within the group
     团体中明确规定的职责

     Duff explained his meaning shortly but clearly.
     达夫简短但清楚地解释了他的意思。

3.approval n.赞成, 同意

例句：The audience showed its approval by cheering loudly.
      观众高声喝彩表示赞许。

批准, 认可

例句：The new proposals have won the approval of the board.
      新建议得到董事会的认可。

动词形式：approve vt. vi.赞成, 同意

She thought for a moment and then approved.
她想了一会儿, 也就同意了。

vt.批准, 通过

The minister approved the building plan.
部长批准了该建筑计划。

4.guarantee vt.保证; 担保

例句：We can't guarantee our workers' regular employment.
      我们不能保证我们的工人定期受雇。

      We guarantee to be here tomorrow.
      我们保证明天来。

同义词组：make sure，see to

make sure设法确保出现某事物

We and our friends will make sure of that.
我们和我们的朋友要确保这一点。

see to确保

例句：I must see to getting the dinner ready.
      我必须注意把饭准备好。

5.adopt v.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。

形近词：adapt vt.使适应,使适合;改编,改写

例句：He adapted himself to the cold weather.
      他适应了寒冷的天气。

6.qualify vt. vi.(使)具有资格, (使)合格

例句：I won't qualify until next year.
      我明年才具备资格。

      This certificate qualifies the products.
      这份证书证明产品合格。