Objective To investigate the prevalence and incidence of Keshan disease (KD) in the villageof Yongjin in Fuyu County, a national surveillance spot, in 2004.是什么意思_Objective To investigate the prevalence and incidence of Keshan disease (KD) in the villageof Yongjin in Fuyu County, a national surveillance spot, in 2004.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句