Chickens that lay unfertilized eggs have been manipulated hormonally, generally, to produce eggs that are unfertilized.

下未受精鸡通常被荷尔蒙操纵才产下未受精。

Most birds don't want to lay unfertilized eggs because unfertilized eggs is a lot of energy and resources.

大部分鸟不想下未受精鸡，因为未受精鸡是大量能量和资源。

Reproduction from an unfertilized egg can happen in other animals such as sharks and bees.

鲨鱼和蜜蜂等其他动物未受精子也可以进行繁殖。

It's a product of parthenogenesis which means it was born from an unfertilized egg.

这种繁殖叫孤雌生殖这就是说它由没有受过精孵化而来。

In parthenogenesis, an embryo develops from an unfertilized egg cell that doubles its own chromosome count.

在孤雌生殖中，胚胎由未受精细胞在染色体数目翻倍后发育而来。

There are birds that lay unfertilized eggs, but as part of a bigger clutch of eggs are fertilized eggs.

确实有下未受精，但是是作为更多受精一部分。

They must ensure that they are in good health, well-fed, and have plenty of nourishment for their unfertilized eggs.

它们要保证自己身体健康，营养充足，必须要为自己未受精摄取大量营养。

It starts with an unfertilized egg cell, added to a blob of yolk, and squeezed down a stretchy tube called an oviduct.

它始于将未受精细胞添加到一并挤压一个称为输管弹性管。

So, the mother fattens herself up on this extra prey and stores the nutrients in her extra (unfertilized) eggs.

因此，母亲靠这个额外猎物使自己变胖，并将营养物质储存在她额外（未受精）中。

This inner machinery includes two ovaries stocked with thousands of tiny sacks called follicles that each contain one oocyte, an unfertilized egg cell.

这套内部机制包含两个巢，巢内存有成千上万微小袋子，叫做泡，每个泡内都含有一个母细胞，即未受精细胞。

Each time ovulation doesn't result in a healthy pregnancy, the womb gets rid of its endometrial lining, along with any unfertilized eggs, sick, dying, or dead embryos.

每当排未能形成健康胚胎，子宫都会使整个内膜脱落，同时将未受精，虚弱 或濒死胚胎一并排出。

See how it is produced after the egg has been released and then drops off if the egg does not embed in the uterus or if the egg is unfertilized.

看看它是如何在子释放后产生，如果子没有嵌入子宫或子未受精，它就会脱落。

Over the next three weeks, the new queen relies on a separate batch of unfertilized eggs to nourish both herself and her brood, losing half her body weight in the process.

新蚁后靠另一批未受精来养育自己和幼，这个过程中，她体重轻了一半。

For example, Crab Spider mothers lay unfertilized nurse eggs for her spiderlings to feast on and once the eggs are consumed, she offers herself to be eaten entirely in the process called Matriphagy.

例如，蟹蛛妈妈会产下未受精看护供其幼蛛享用。一旦吃完了，她会把自己也作为食物被幼蛛整个吃掉，这一过程被称为“母性吞噬”。

If the egg is not fertilized by sperm within 24 hours, the unfertilized egg will die, and the entire system will reset itself, preparing to create a new egg and uterine lining the following month.

如果子在 24 小时内没有被精子受精，未受精子就会死亡，整个系统会自行重置，准备在下个月产生新子和子宫内膜。