The fried egg jellyfish, also known as medusa, produce eggs that are fertilized in sea water, which then develop into a tiny larva fixed to sea bed organisms.

煎蛋水母，也被称为美杜莎水母，它的卵在海水中受精，然后发育成固定在海床有机体上的微小幼虫。

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During diapause, a young kangaroo stays in the female's pouch and growth of a second fertilized egg inside the uterus is delayed.

在滞育期间，小袋鼠呆在雌袋鼠的育儿袋里，因而推迟了子宫内第二个受精卵的发育。

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But they never developed properly, largely because of defects in parts of the egg outside the fertilized nucleus.

但是这些卵细胞却不能正常发育，其原因主要是受精核外部的部分卵细胞有缺陷。

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During development of the embryo it goes from being a single cell, the fertilized egg, to being a multi-cellular organism with billions of cells in it.

胚胎的发育,始于一个单一细胞,即受精卵,直到形成一个以十亿计数量的细胞构成的,多细胞有机体

耶鲁公开课 - 生物医学工程探索课程节选

Those two examples I just gave you, one had to directly inject a gene containing vector into the pronucleus of a fertilized egg and you don't have that opportunity in adults.

在我刚给出的两个例子里,一个必须得将带有目的基因的载体,直接注射到受精卵的原核中,这在成年人身上行不通

耶鲁公开课 - 生物医学工程探索课程节选

You could do the same thing in mammals and here's one quick example of that, using a different kind of a vector, but inserting a gene into the fertilized egg of a mammal, in this case, a sheep.

你也能在哺乳动物上做到同样的效果,这里有另一个简短的例子,用了另一种载体,把一段基因注入哺乳动物的受精卵中,在这里我们用了绵羊

耶鲁公开课 - 生物医学工程探索课程节选

The drug works by using high doses of the female hormone progestin, which also is contained in birth-control pills, to block a potentially fertilized egg from becoming implanted in a woman's uterus.

WSJ: Judge Eases Restrictions on Plan B Emergency Contraceptive

The drug works by using high doses of the female hormone progestin, which also is contained in birth-control pills, to prevent ovulation or block a potentially fertilized egg from becoming implanted in a woman's uterus, according to the drug's label.

WSJ: Judge Eases Restrictions on Plan B Emergency Contraceptive

If there has been fertilization, Plan B may prevent a fertilized egg from embedding in the uterus.

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