单词:defatted vaccine
单词:defatted vaccine 相关文章
Broadcast: Jan 6, 2003 By Jill Moss This is the VOA Special English Development Report. Vaccines are special medicines to prevent diseases. They are usually given to children by injection. They have p
Each lightning bolt heats the air to 44,000 degrees Fahrenheit hotter than the surface of the Sun. 每一道闪电都能把空气。加热到44,000华氏度比太阳表面还热。 What if we could use these electromagnetic pulses as beacons,beacons
By Melinda Smith and Paul Sisco Washington, DC 22 December 2006 watch 2006 Science and Medicine Within the next quarter century, AIDS is projected to be among the top three causes of death around the world. That dire prediction comes from researcher
The narrative of a rising Africa is being challenged. 这是一个正在崛起的非洲面临挑战的故事。 About 10 years ago, I spoke about an Africa, 大约在十年前,我做了一个关于非洲的演讲, an Africa of hope and opportunit
今天我们要学的词是untested。 Untested, 没有经过测试的,没有经过考验的。最近,香港和印度等亚洲地区陆续发现禽流感。为了预防禽流感对人类的威胁, Several human vaccines for bird flu have been d
今天我们要学的词是vaccine。 Vaccine, 疫苗。The Food and Drug Administration approved vaccines designed to protect against the H1N1 flu virus, 美国食品和药物管理局批准了甲型H1N1流感疫苗。 The first doses of the vaccine