VOA常速英语:New TB Vaccine Passes Safety Tests

短语讲解：

1. Tuberculosis continues to be a major threat around the world, especially in developing countries.

developing countries发展中国家
例句：Rich countries should give more aid to developing countries.
富有的国家应对开发中的国家多予援助。

2. A new vaccine has gone into testing, and the results may change how childhood vaccinations are given.

go into进入(某种状态)
例句：He went into a rage when he learned about it.
他听到这事后勃然大怒。

3. The vaccine is very effective in children, but experts seeing a rise in adult TB cases think the vaccine's protection may eventually wear off.

wear off逐渐减弱, 逐渐消失
例句：The effects of the drug began to wear off.
药效开始减弱了。

4. In response, researchers at Oxford University in England came up with a vaccine supplement called MVA85A.

come up with想出, 提出
例句：I hope you can come up with a better plan than this.
我希望你们能提出一个比这个更好的计划。

5. Preliminary tests indicate that, when given to children who also received the old vaccine, it is safe and produces a robust immune response, which is what a vaccine is supposed to do.

be supposed to应该,被期望
例句：The show is supposed to be good.
这场表演应当是相当好的。

6. That conclusion came from a study of several hundred infants in Gambia, which also helped researchers learn the best way to administer the new vaccine.

come from由…造成, 源自
例句：Knowledge comes from practice.
知识来自于实践。

7. Which implies that giving these two groups of vaccines together has a negative impact on the new TB vaccine.

have an impact on对…有影响;对…起作用,产生效果
例句：The amount of taxation levied will have an impact on the economy of a country.
征缴的税额对一国的经济有直接影响。

8. He explains that although the measured tuberculosis immune response was lower when the TB vaccine was given with the other vaccines, it still may be enough to protect against the disease.

protect against保护, 保卫
例句：You need warm clothes to protect you against the cold.
你需要暖和的衣服来御寒。

9. In the paper, the authors say that the lower immune response when the vaccines are given together is more likely a result of interference between adjuvants, which are additives used to boost the effectiveness of a vaccine.

be used to do被用来做…
例句：Coal is used to make electricity.
煤被用来发电。