Tingroom Radio—流感--传播增速和人类的抗体
时间：2019-01-22 作者：英语课 分类：英语时差8，16
Times when diseases 2 spread throughout the world are called pandemics. The W-H-O says the next flu pandemic is likely to kill as many as six-hundred-fifty-thousand people in industrial countries. The greatest effect will likely be in developing countries. Health care resources in those countries are limited, and populations are weakened 3 by poor health and diet. Eighty years ago, the flu virus took months to spread around the world. Today, airplane travel means a virus can spread around the world within days. Experts say another virus like the one that appeared in nineteen-eighteen could be as dangerous as any disease 1 ever known. Medical experts have identified three major kinds of flu. They call them type A, B and C. People may get it and not even know it. But researchers study the other two kinds very closely 4. Viruses change to survive. This can make it difficult for the body to recognize and fight an infection. A person who has suffered one kind of flu usually cannot develop that same kind again. The defense 5 system produces antibodies. These substances stay in the blood and destroy the virus if it appears again. But the body may not recognize a flu virus that has even a small change.
- The doctors are trying to stamp out the disease.医生正在尽力消灭这种疾病。
- He fought against the disease for a long time.他同疾病做了长时间的斗争。
- Smoking is a causative factor in several major diseases. 抽烟是引起几种严重疾病的病因。
- The illness frequently coexists with other chronic diseases. 这种病往往与其他慢性病同时存在。
- The team has been weakened by injury. 这个队因伤实力减弱。
- In his weakened condition, he is very susceptible to cold. 他身体很弱，因此很容易患感冒。 来自《简明英汉词典》
- We shall follow closely the development of the situation.我们将密切注意形势的发展。
- The two companies are closely tied up with each other.这两家公司之间有密切联系。