| 例句 |
Conception is the moment when a fertilized egg implants itself in a woman's uterus.怀孕是指一个受精卵植入子宫的时刻。Scientists cross-fertilized the two plants.科学家们将两种植物杂交。Once an egg is fertilized by the sperm, it becomes an embryo.卵子受精后即成胚胎。Certain varieties cannot be fertilized with their own pollen.有些品种不能自花受精。Two days later, they implanted the fertilized eggs back inside me.两天以后，他们把受精卵重新植入了我的体内。In human reproduction, one female egg is usually fertilized by one sperm.在人类生殖过程中，通常是一个精子使一个卵子受精。Identical twins develop from a single fertilized egg that then splits into two.同卵双胞胎是由一个受精卵分裂发育而来的。If the egg is not fertilized, oestrogen and progesterone decrease.如果卵子未受精，则雌激素和孕酮的分泌会减少。The fertilized egg implants and becomes a foetus.受精卵着床后发育成胎儿。After the egg has been fertilized, it will hatch in about six weeks.蛋受精后六周左右孵化。If two ova are fertilized at the same time, the mother will have twins.如果两个卵子同时受精，母亲就会生出双胞胎。The sex of the child is predetermined when the egg is fertilized.卵细胞受精时，孩子的性别就预先确定了。Pregnancy begins when the fertilized egg is implanted in the wall of the uterus.当受精卵植入子宫壁时，妊娠就开始了。 |