Phenyl(or polyphenyl)substituted epoxides serve as excellent precursors to phenyl(or diphenyl)carbenes.是什么意思_Phenyl(or polyphenyl)substituted epoxides serve as excellent precursors to phenyl(or diphenyl)carbenes.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句