Preserving the natural shape of the tragus and the pretragal depression during making cartilage perichondrium composite graft in tympanoplasty是什么意思_Preserving the natural shape of the tragus and the pretragal depression during making cartilage perichondrium composite graft in tympanoplasty在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句