Objective To study the relationship of different ages, sex and stability of aspartate aminotransferase( AST) in gingival crevicular fluid(GCF) .是什么意思_Objective To study the relationship of different ages, sex and stability of aspartate aminotransferase( AST) in gingival crevicular fluid(GCF) .在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句