英语语法分析

Mrs Grovenburg's pregnancy was eventually identified as "superfetation".

格鲁温伯格女士最终被确定为是“重孕”。

Mrs Grovenburg's pregnancy was eventually identified as "superfetation", meaning two babies are conceived at different times, born on the same day yet - medically speaking - are not considered twins.

格鲁温伯格女士最终被确定为是“重孕”，就是说她在不同的时间段怀上了两个孩子，但是孩子在同一天出生了，从医学上说，他们并不是双胞胎。