例句與造句

1. When the first artificial pacemakers for the human heart were developed about 30 years ago , the sole objective was to save the patient from unpredictable sudden death
   當首批心臟起搏器在大約30年前問世時，其唯一的目的就是使患者免遭意外的猝死。
2. Contraindications documented hypersensitivity 。 adams - stokes syndrome and wolf - parkinson - white syndrome ; severe sinoatrial , av , or intraventricular block ( if artificial pacemaker is not used )
   禁忌癥：由過敏史者。阿斯綜合征，沃-帕-懷綜合征，嚴重竇房結.房室結傳導阻滯或室內(nèi)阻滯患者禁用。
3. It's difficult to find artificial pacemaker in a sentence. 用artificial pacemaker造句挺難的