Objective To study the epidemic situation of typhoid fever in Jiangning District of Nanjing City from 1986 to 2005,and establish effective measures for prevention.是什么意思_Objective To study the epidemic situation of typhoid fever in Jiangning District of Nanjing City from 1986 to 2005,and establish effective measures for prevention.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句