The IHR (1969) were primarily intended to monitor and control six serious infectious diseases: cholera, plague, yellow fever, smallpox, relapsing fever and typhus.是什么意思_The IHR (1969) were primarily intended to monitor and control six serious infectious diseases: cholera, plague, yellow fever, smallpox, relapsing fever and typhus.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句