The kitten in this photograph has diprosopia, a rare congenital malformation that duplicates facial features. 这张照片中的小猫所示的双面畸形，是一种罕见的先天性畸形，面部特征重复。
That "might be a useful tool" for figuring out the cause of a disease, malformation, or even a behavioral trait. 那“可能是找出疾病病因、畸形或某种行为特征的有效手段”。
The main problem is the nature of their malformation: the maids have usually been represented as being conjoined both at the shoulder and at the hip and are depicted as such on all known moulds. 最主要的问题是她们身体畸形的性质如何：姐妹二人的形象是在胯部和肩膀处都有连接，并且所有的已知模具上都是这样刻画的。
权威例句
The condition involves a kind of tangle in the brain called an arteriovenous malformation, or AVM. NPR: Govt Stops Study Seeking To Prevent Type Of Stroke
