Surgical treatment of isolated unilateral absence of a pulmonary artery with partial ligation of aortopulmonary collateral arteries: a case report and review of literature是什么意思_Surgical treatment of isolated unilateral absence of a pulmonary artery with partial ligation of aortopulmonary collateral arteries: a case report and review of literature在线翻译_英语_读音_用法_例句