VOA常速英语:Pills Offer New Hope in Fight Against Yaws

2. estimate v. 估计; 评价, 评估
例句：The gardener estimated that it would take him four hours to weed the garden.
园丁估计他给花园除草需要四个小时。

3. eradicate vt.摧毁,完全根除
例句：The disease has been eradicated from the world.
这种疾病已在全世界得到根除。

4. symptom n.症状；征兆
例句：A fever is a symptom of illness.
发烧是生病的症状。

5. eliminate vt. 排除,消除,消灭
例句：Our goal is to eliminate poverty.
我们的目标是消灭贫困。

6. allergic adj. 过敏的
例句：Alice is allergic to the fur of cats.
艾丽斯对猫的皮毛过敏。

7. reaction n. 反应; 回应
例句：Their reaction to the joke is to laugh.
他们对这个笑话的反应是笑。

8. cure vt.治愈, 治好；消除, 矫正
例句：He says he can cure me but I still doubt him.
他说他能治好我的病, 但我还是不相信他。

9. switch v. 改变;转移
例句：He studied chemistry and then switched to biology.
他原来学化学,后来改学生物。

10. resistance n. 抵抗力;抗性;耐性
例句：I catch colds frequently because my resistance is low.
我经常得感冒,因为我抵抗力差