prolongvt.延长；拖延prolonged sleep apnea睡眠性呼吸暂停延长, 持续睡眠性呼吸暂停prolonged life support延续生命支持prolonged active phase活跃期延长prolonged second stage第二产程延长prolongation of effect延效prolonged erosion test长期耐蚀试验prolongation of a bill延长汇票期限prolonged breath sound呼吸音延长prolonged diet session延长国会Prolongation Structure延拓结构