adj.未施肥的;未受精的
Sperm race towards the unfertilized egg. 精虫朝未受精的卵子冲去。
When the cell starts to split you take out the cell and replace it into another unfertilized ovum. 当细胞开始分裂时,取出细胞并把它放到另一个未受精的卵细胞中。