Health Experts Detail Radiation Symptoms
U.S. health experts monitoring Japan's nuclear crisis are seeking to explain health risks from radiation（放射） exposure, while cautioning that radiation levels measured this week at the Fukushima-Daiichi power plant in northern Japan have not yet reached a critical level.
The publication Scientific American this week quoted Susan Langhorst, the chief radiation officer at Washington University, as saying acute radiation sickness normally sets in after a full-body dose of radiation 3,000 times greater than the recommended annual safe dose.
The Japanese government says levels recorded Tuesday at the Fukushima plant were 20 times higher than the annual limit for nuclear industry employees.
The U.S. Centers for Disease Control and Prevention says first symptoms of radiation sickness, which normally include nausea 1, vomiting 2, rashes and diarrhea, can appear within minutes or days of exposure. The CDC says a period of serious illness - including appetite loss, fatigue 3, fever and gastrointestinal problems may follow and last from hours to months.
CDC and Environmental Protection Agency scientists say acute poisoning can be treated with potassium iodide to block radioactive iodine 4 from being absorbed into the thyroid gland 5. It can not protect other parts of the body, and can not reverse thyroid damage that has already occurred.（本文由在线英语听力室整理编辑）
- Early pregnancy is often accompanied by nausea.怀孕期常有恶心的现象。
- He experienced nausea after eating octopus.吃了章鱼后他感到恶心。
- Symptoms include diarrhoea and vomiting. 症状有腹泻和呕吐。
- Especially when I feel seasick, I can't stand watching someone else vomiting." 尤其晕船的时候，看不得人家呕。”
- The old lady can't bear the fatigue of a long journey.这位老妇人不能忍受长途旅行的疲劳。
- I have got over my weakness and fatigue.我已从虚弱和疲劳中恢复过来了。
- The doctor painted iodine on the cut.医生在伤口上涂点碘酒。
- Iodine tends to localize in the thyroid.碘容易集于甲状腺。