Objective Change of purified protein derivative (PPD) skin reaction was observed between the acute phase and the convalescent phase in 25 patients with KD.是什么意思_Objective Change of purified protein derivative (PPD) skin reaction was observed between the acute phase and the convalescent phase in 25 patients with KD.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句