VOA慢速英语:People With Chronic Hepatitis B Often Do Not Know It

短语讲解：

1. Hepatitis is the name for a group of viral infections that attack the liver. These are called A, B, C and so on.

and so on等等
例句：She spends her day doing housework, watching television, reading and so on.
她以做家务、看电视、看书等等度过一天。

2. An estimated two billion people are infected with hepatitis B.

be infected with感染,沾染上
例句：He is infected with malaria.
他感染到疟疾。

3. Hepatitis B is spread through contact with infected blood or other body fluids. Mothers can infect babies at birth.

contact with与…接触
例句：Avoid contact with the fire ants.
尽量避免跟红火蚁接触。
body fluid体液

4. Chronic cases can lead to death from cirrhosis or scarring of the liver and liver cancer.

lead to导致, 引起
例句：Chronic poisoning may lead to death from inanition. 
慢性中毒也可能由虚弱导致死亡。

5. The bottom line -- since most people of Asian heritage came to the US from endemic countries or were born to parents from these countries, they should be screened for chronic hepatitis B.

bottom line基本意思(或情况),概要
例句：The corporation's bottom line is a good profit margin.
公司的基本要求是好的利润。

6. A vaccine to prevent hepatitis B has been available for thirty years.

be available for有效
例句：The season ticket is available for three months.
季票有效期为三个月。

7. But Dr. Blumberg said it took some time to find a drug company willing to produce it.

be willing to愿意，乐意
例句：She's always willing to help out.
她总是乐于帮助人。

8. But he also had other interests -- including the search for life in outer space.

search for搜索, 搜寻
例句：After the war, the government asked her to help search for missing soldiers. 
战后，政府要求她帮助寻找失踪的士兵。