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VOA常速英语:New TB Vaccine Passes Safety Tests
2011-06-24来源:VOA
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词汇讲解:
1. major adj. 较大的; 主要的; 严重的
例句:Lack of experience does not constitute a major hindrance to progress.
经验缺乏并不是进步的主要障碍。
2. threat n. 可能造成威胁的人[事, 想法]
例句:The use of nuclear weapons is a horrible threat to the species.
核武器对人类是一个严重威胁。
3. vaccine n. 疫苗;痘苗
例句:She takes a vaccine against influenza every fall.
她每年秋季接种流感疫苗。
4. effective adj. 有效的; 生效的
例句:The medicine is effective against cancer.
这药物治癌有效。
5. supplement n. 增补,补充
例句:The money they get from fruit-picking is often a supplement to incomes earned in the town.
他们靠采摘水果所得的钱常常是城里所挣收入的补贴。
6. indicate vt. 表明;象征;暗示
例句:His hesitation indicates unwillingness.
他的犹豫表明不愿意。
7. administer vt. 给予,施用(药物等)
例句:The doctor administered some medicines to his patient.
医生给了他的病人一些药。
8. infant n. 婴儿, 幼儿
例句:The sole survivor of the crash was an infant.
这次撞车的惟一幸存者是一个婴儿。
9. post vt. 张贴; 宣布
例句:Post this notice on the wall.
把这个通知贴在墙上。
10. boost vt. 增加, 提高
例句:These changes will help to boost share prices.
这些变化将有助于提高股票价格。
11. separately adv. 分离地;个别地,分别地, 单独地
例句:He sold his birds separately to separate buyers.
他把他的鸟儿分别卖给不同的买主。
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