心脏病

healthy heart───健康的心脏

at heart───本质上，内心里

faintheart───n.懦夫，怕事人；无决断力的人；adj.懦弱的；无决断的

faulty gene───缺陷基因

Faculty board───教师委员会

take to heart───认真关注；对…耿耿于怀

by heart───凭记忆，记牢

After 10 years with two blood pumping organs, Hannah Clark's faulty one did what many experts had thought impossible: it healed itself enough so that doctors could remove the donated heart.───在以后10年中汉娜卡拉可拥有两种不同心脏器官，她的术后心脏的变化却让许多医学专家瞠目结舌：她的心脏病已经自愈并需要医生取出移植的心脏。

Heart valve replacement surgery typically involves replacing the faulty or leaky valve with a pig or cow tissue valve.───一般心脏瓣膜置换手术包括用猪或牛组织瓣膜置换损毁或有漏洞的瓣膜。

Plastic heart valves do exist and every year in the UK thousands of people have operations to replace faulty heart valves.───采用塑胶心脏瓣膜是可行的，每年在英国有成千上万的人做手术来替换有缺陷的心瓣膜。