Tracheotomy was performed in 7 cases,rib tractions in 4 cases,internal fixations of sternum and rib in 3 cases.是什么意思_Tracheotomy was performed in 7 cases,rib tractions in 4 cases,internal fixations of sternum and rib in 3 cases.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句