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[今日口语] She is in a quandary about which university to choose.

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heart valve

心瓣膜

同：	[n.] cardiac valve

The idea of putting pig parts in people is not a new one; physicians have long used porcine heart valves and hormones in people
把猪器官放在人体内的想法并非新创意，医生很久以前就开始在人身上用猪心脏瓣膜和猪激素。收藏
Operations are now being carried out that were not dreamed of fifty years ago. The heart can be safely opened and its valves repaired.
50年前做梦都没有想到的手术现在在做了。心脏可以安全地打开，心脏瓣膜得以安全修复。收藏

名词解释：

a valve to control one-way flow of blood
[同] heart valve, cardiac valve
an implant that replaces a natural cardiac valve

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