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Voice 1: Doctors operate to remove the donor heart. They inject a chemical containing potassium into the heart. This stops the heart from beating. Then they put the heart in ice. This helps to keep the heart in a good condition. But they can only keep it this way for four to six hours. After this they cannot use the organ.
声音1：医生通过手术摘除捐献心脏。他们向捐献心脏注射一种含有钾的化学物质。这种物质可以阻止心脏跳动。然后他们将心脏放入冰块中。这有助于使心脏保持良好的状态。但是这种方法只在四到六个小时以内有效。如果超过这个时间，那心脏就不能用了。
Voice 2: It is difficult to link donor hearts and patients together. Sometimes it is not possible to do so in such a short space of time. For example, the donor may be a long distance away. So the donor heart goes to waste - it cannot be used. But in the future doctors may be able to keep hearts in a good condition for longer than six hours. This would help them greatly. This is thanks to research from scientists at Papworth Hospital in Cambridge, England. They have invented a new method of protecting donor hearts.
声音2：很难将供体心脏与患者联系起来。有时不可能在很短的时间内做到。举例来说，捐赠者可能相隔很远。供体心脏可能会白白浪费掉，无法进行移植。但是未来，医生也许可以使心脏保持良好状态的时间超过6个小时。这会对他们有极大的帮助。而这要感谢英国剑桥帕普沃斯医院的科学家进行的研究。他们发明了一种保护供体心脏的新方法。
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