慢速英语:Experts Say as AIDS Epidemic Changes, So Should Prevention Efforts

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例句：The Sanitary Board tries to stamp out the epidemic.
       卫生局试图消灭这种流行病。

a. 流行的,传染性的

例句：Football hooliganism is now reaching epidemic proportions.
      足球比赛中恣意闹事现已达愈演愈烈的地步。

2.celebrate vt.
vi.庆祝,祝贺,举行

例句：The church bells ring to celebrate the wedding.
       为庆祝婚礼教堂的钟都响了。

3.estimate v.估计,估价;评价,判断
n. 估价,估价

例句：The medicare cost is estimated to be one billion dollars.
       老年医疗保健费用估计为十亿美元。

      His estimate of the situation was sober.
      他对形势的估计是审慎的。

4.peak n.最高点, 最高水平; 高峰

例句：He's at the peak of his career.
      他正处于事业的巅峰。

      Traffic reaches a peak between 8 and 9 in the morning.
      早晨八九点钟是交通的高峰时刻。

5.secure adj.牢固的; 可靠的

例句：That is a secure foothold.
      那是一可靠的落脚点。

      Foreign tourists feel happily secure while visiting the city.
      外国游客访问这个城市时都很有安全感。

6.recommend vt.推荐, 介绍, 赞许某人[某事物]

例句：Can you recommend a classmate who can take up the job?
      你能不能推荐一位能承担这项工作的同学?

      Can you recommend me a good book?
      你能给我介绍一本好书吗?

7.expansion n.扩大, 扩张, 扩展, 膨胀

例句：Heat causes the expansion of gases.
       热使气体膨胀。