AB型阴性是一种罕见的血型。
因为这两个孩子有同样罕见的血型，约翰尼势必就是理想的输血者了。
Since the two children had the same rare blood type, Johnny would be the ideal donor.
研究人员称具有强有力的语气证明他是“凯尔阳性”，这是一种罕见的血型，会导致严重的健康问题和生殖障碍。
Researchers say there is compelling evidence that he was ‘Kell positive’, a rare blood type which can cause serious health and fertility problems.
医生正在寻找能给一个血型罕见的病人输血的献血者。
Doctors are looking for a donor in order to perform a transfusion for a patient with rare blood.
在一项新研究中，科研人员推断亨利八世的X染色体遗传障碍和罕见血型是导致其状况频发的罪魁祸首。
In a new study, researchers propose that Henry had an X-linked genetic disorder and a rare blood type that could explain many of his problems.
这条规定帮不到遭遇车祸，大量失血，却持有罕见血型的女子，帮不到成百上千需要输血疗法的贫血性癌症患者。
This proposal won't help the young woman with a rare blood type, knocked over by a car, bleeding profusely. This won't help the thousands of anaemic cancer sufferers needing a blood transfusion.
有些血型很常见，其他有些血型的分布具有地区性，还有一些血型在任何地方都是罕见的。
Some bloods types are quite common, others are regionally distributed, and others are rare everywhere.
有些血型很常见，其他有些血型的分布具有地区性，还有一些血型在任何地方都是罕见的。
Some bloods types are quite common, others are regionally distributed, and others are rare everywhere.
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