英语语法分析

No remain of the Biddenden Maids has ever been studied by a pathologist or teratologist, nor is their grave known, nor we know if they ever existed in the first place.

从未有哪位病理学家或是畸形学家研究过比登登姐妹的遗体，她们的陵墓在何处亦无人知晓，我们甚至连此二人是否真实存在过都不能确定。