1. Two days later, they implanted the fertilized eggs back inside me. 两天后他们把受精卵移植回我的体内。
2. Non-identical twins are the result of two fertilized eggs implanting in the uterus at the same time. 非同卵双生胎是两个受精卵同时在子宫着床的结果。
3. In these species, fertilized eggs develop into females and unfertilized eggs into males. 在这些物种中，受精卵发育为雌性，未受精卵发育为雄性。
4. Because identical twins come from a single fertilized egg that splits into two, they share virtually the same genetic code. 由于同卵双胞胎来自于一个分裂成两个的受精卵，他们实际上共享相同的遗传密码。
5. When the egg is fertilized, the substances become active and, presumably, govern the behavior of the genes they interact with. 当卵子受精时，这些物质变得活跃起来，并可能控制与它们相互作用的基因的行为。
