然而,畸形儿病例大量发生的原因不得而知.And still the cause of the phocomelia outbreak remained unknown.近亲婚配家族生育子女仍是出现遗传病和先天畸形儿的主要原因之一.Near relative wedding was still one of the main reasons tance disease and congenital monstrosity infants....

“畸形儿”的英语可以翻译为：oaf ...