She was cloned from a single cell of an adult female sheep, overturning long-held scientific dogma that had declared such a thing biologically impossible.

她是从一只成年母羊的单个细胞中克隆出来的，这推翻了长期以来一直坚持的科学教条，该教条宣称这样的事情在生物学上是不可能（发生）的。