Today, we know human embryos have tails that dissolve as the embryo develops.

今天，我们知道人类胚胎的尾巴会随着胚胎的发育而被溶解。

Conservationists started an artificial breeding programme, using eggs from the females and sperm from Suni to produce an embryo – an unborn animal in the very early stages of development.

环境保护主义者启动了一项人工配种计划，利用雌性的卵和" 苏尼" 的育出一个胚胎——处于发育早期的未出生动物。

Before we're born, human embryos develop three different types of kidneys.

在我们出生之前，人类胚胎发育出三种不同的类型肾脏。

He said he had edited – meaning changed – the genetic material of two human embryos. The embryos developed into twin girls, who were born.

贺建奎称，他编辑（改变）了两个人类胚胎的遗传物质。这些胚胎发育成一对双胞胎女婴并顺利出生。

That's a huge milestone in fetal development.

这是胚胎发育的重要里程碑。

The answer to question Number 1, is yes, definitely: embryos start peeing after just two months of development, around the time they first begin swallowing and, therefore, drinking amniotic fluid.

答案是，是滴，肯定的：胚胎在发育后仅两个月后就开始嘘嘘，大约也在这个时候，他们开始吞咽，以及，喝羊水。

In FAS, ethanol interferes with cell division and proliferation, cell growth and differentiation and with the migration of mature cells to their final location in the developing embryo which affects the development of various fetal tissues, including the brain.

在FAS，乙醇会干扰细胞分裂、增殖，影响细胞生长和分化，并且在胚胎发育的过程，妨碍成熟细胞迁移到它们最终的部位，这会影响胎儿各种组织的发育，括大脑。

The septum is formed during development as this muscular ridge of tissue grows upward from the apex, or the tip, and then fuses with a thinner membranous region coming down from the endocardial cushions.

室间隔在胚胎发育期间形成，这种组织肌肉嵴从心尖部往上长，并与从心内膜垫向下延伸的薄膜区域融合。

More positively, cell migration is the driving force of embryo development and is, in adults, essential to the immune response and to the healing of wounds.

更加肯定的是，细胞迁移是胚胎发育的原动力，而且对成年人来讲，细胞迁移对免疫反应以及伤口愈合非常重要。

Around week 8 of development the neuroblasts get to the proximal colon of the gut, and then they pass through the distal colon, and around week 12 they finally the reach the rectum.

在胚胎发育的第8周左右，神经母细胞到达肠道的结肠近端，之后穿过结肠远端； 在第12周左右到达直肠。

The first exhibit shows a human sperm entering an egg. The sculptures progress from the egg producing an embryo, which then turns into a fetus in a giant womb.

第一个展品展现了一颗人类进入一颗卵。这些雕塑从卵发育成胚胎，然后变成一个巨大宫的一个胎儿。

By an embryo's fifth week of development, these main three chambers start morphing into five secondary vesicles that essentially form the roots of what will become your grown-up brain structures.

到胚胎发育的第五周，这三个主要的腔室开始变成五个次要的囊泡，它们基本上形成了你成年大脑结构的根。

One is to shed light on the complicated process of embryological development, which might eventually lead to treatments for some congenital diseases.

一是阐明胚胎发育的复杂过程，这最终可能导向对某些先天性疾病的疗法。

Sozen added that scientists should be able to use the models to study embryonic failure, developmental disorders and pregnancy loss.

索岑补充说，科学家应该能够使用这些模型来研究胚胎衰竭、发育障碍和妊娠丢失。

Because if the egg gets jarred, you don't want to kill the embryo that's developing by a sudden shock.

因为如果蛋受到冲击，你肯定不想因为瞬间的冲击扼杀正在发育的胚胎。

And once this second baby leaves the pouch, the third embryo starts to develop, and the cycle continues.

第二个幼崽一离开育儿袋，第三个胚胎就开始发育，就这样一直循环下去。

Those embryos followed the development of natural mouse embryos up to eight and a half days after fertilization.

这些胚胎在受后8天半的时间里和自然受的老鼠胚胎的发育情况一致。

Fertility specialists now grow embryos longer in the lab and carry out more tests for genetic problems.

生育专家现在延长了胚胎在实验室发育的时间，而且会对遗传问题进行更多测试。

But he added that " the farthest we could get is day 14 in human embryo development."

但他补充说，“我们最多只能做到人类胚胎发育的第 14 天。”

I was horrified by how many deformed embryos developed in animals that had eaten cesium-contaminated food.

食用铯污染食物的动物胚胎，畸形发育数量让我惊骇不已。