Everyone who is going abroad will need to be immunised against typhoid.准备出国者均需注射伤寒预防针.An outbreak of typhoid followed.继而爆发了伤寒.Typhoid fever sneaks in when sanitation fails.环境卫生搞不好,伤寒就会乘虚而入....
艾氏剂和氯丹都是重要的杀虫剂.Both Aldrin and Chlordane are valuable insecticides.探讨职业性接触氯丹、含砷化合物灭蚁药物对作业人员肝功能水平的影响.To explore the level of liver function damage in workers exposed termite control drugs.水银, 多氯联苯和氯丹是在伊利诺依州的鱼类中发现的主要污染物.Me...