ovum造句
Once the
ovum is released it has a lifespan of 12 to 36 hours.
卵子排出后可存活12至36小时。
an immature
ovum未成熟的卵细胞
One way is taking the cell from a fertilized
ovum.
一种方法是从受精卵中取出细胞.
By day 11 the
ovum begins to attach and implant in the lining of the uterus.
到第11天卵子着床嵌入子宫内壁.