在心脏病发作，如果在冠状动脉堵塞物处理不快，心脏肌肉会开始死亡，被疤痕组织所取代。
During a heart attack, if the blockage in the coronary artery isn't treated quickly, the heart muscle will begin to die and be replaced by scar tissue.
如果冠状动脉没有重大堵塞，心脏的各个部位会收到等量的氧气。
If all the coronary arteries are free of significant obstructions, all parts of the heart will receive equal amounts of oxygen.
九年后，他被迫住院动手术，以对付五条严重堵塞的冠状动脉。
Nine years later he was hospitalized for an operation to bypass five seriously blocked coronary arteries.
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