Objective To find out the ultrastructure change of human fetal esophageal epithelium in the high incidence area of esophageal cancer.是什么意思_Objective To find out the ultrastructure change of human fetal esophageal epithelium in the high incidence area of esophageal cancer.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句