| 单词 | vaccine |
| 释义 | vaccine (once / 820 pages) n To prevent you from getting sick, a doctor will give you a shot with a vaccine in it, which is a mixture that teaches your body how to fight against viruses and diseases. It’s fascinating how vaccines work. A dead or really weak strain of a virus is injected into your body, and your system creates antibodies specifically designed to fight that particular virus. Once your body learns how to make those antibodies, you become immune to the virus, and it can’t make you sick. The word comes from the Latin vacca, meaning “cow,” because in 1796 a doctor used “cow pox” viruses to create a vaccine to prevent smallpox. Thank you, cows. WORD FAMILYvaccine: vaccinate, vaccines+/vaccinate: vaccinated, vaccinates, vaccinating, vaccination, vaccinator/vaccinated: unvaccinated/vaccination: vaccinations/vaccinator: vaccinators USAGE EXAMPLESTo reduce the risk of pneumonia, two vaccines are recommended for people age 65 and older: Prevnar 13 first, followed by Pneumovax a year later. Washington Post(Dec 30, 2016) After the introduction of the measles vaccine, the rate of the disease dropped precipitously; it was declared eliminated from the U.S. in 2000. Seattle Times(Jan 02, 2017) It also set off a race for a vaccine, as global health officials strive to avoid a repeat. Washington Times(Jan 01, 2017) n immunogen consisting of a suspension of weakened or dead pathogenic cells injected in order to stimulate the production of antibodies Syn|Hypo|Hyper vaccinum DPT vaccine abbreviation for combination vaccine against diphtheria and pertussis (whooping cough) and tetanus toxoids; usually given in a series of injections in early childhood Pneumovax, pneumococcal vaccinevaccine (trade name Pneumovax) effective against the 23 most common strains of pneumococcus poliovirus vaccinevaccine prepared from poliovirus to provide immunity to poliomyelitis proteosome, proteosome vaccinea form of vaccine that can be administered by an inhaler OPV, Sabin vaccine, TOPV, oral poliovirus vaccine, trivalent live oral poliomyelitis vaccinean oral vaccine (containing live but weakened poliovirus) that is given to provide immunity to poliomyelitis IPV, Salk vaccinea poliovirus vaccine consisting of inactivated polio virus that is injected subcutaneously to provide immunity to poliomyelitis immunizing agent, immunogen any substance or organism that provokes an immune response (produces immunity) when introduced into the body |
| 随便看 |
英语词典包含147318条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。