男性每次射精的精液含多达三亿个精子。

Each male ejaculation will contain up to 300 million sperm.

《柯林斯英汉双解大词典》

雌性储存精子，可以通过受精或不受精来决定每一个卵细胞的性别。

A female stores sperm and can determine the sex of each egg she lays by fertilizing it or leaving it unfertilized.

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在这种蝴蝶卵上，花边图案标记精子进入的卵孔。

On this butterfly egg, the lacy pattern marks the micropyle, where sperm enters.

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So on the personality theory, I did not exist when that fertilized egg came into being, when the egg and the sperm joined.

所以在人格理论上，卵子受精的时候我还不存在，卵子和精子结合时。

耶鲁公开课 - 死亡课程节选

The crucial point in thinking about this is to realize that every time you combine a different egg with a different sperm ? you end up with a different person, right?

考虑这个问题的关键一点是,明白每一次,你把一个不同的卵细胞和一个不同的精子结合,都会产生一个不同的人，对吗？

耶鲁公开课 - 死亡课程节选

This one cell, this one fertilized cell which is unique because it's the - its chromosome contains the combination of the sperm and the egg, develops into an embryo and then on birth develops into a human.

这个受精卵,是独一无二的,因为它的染色体,包含了精子和卵子的组合,并由此发育成为一个胚胎,之后形成一个人类个体

耶鲁公开课 - 生物医学工程探索课程节选