For example, the language part of the brain develops when a person is very young.

例如，在人们小时候，大脑的语言部分就会始育。

That's when neurodevelopment begins, when the brain starts developing.

这时育始，大脑始育。

Then groups of heavy, eight-to- twelve-centimeter-long fruits that look like mangoes start to develop.

然后，一簇簇看起来像芒果的水果始育，它们很重、有8到12厘米长。

The disruption in hormones prevents puberty from beginning or successfully completing.

激素的中断阻止了青春期育始或完成。

After nine months, the first baby leaves the pouch, triggering the second embryo to start developing.

九个月后，第一个幼崽离育儿，触第二个胚胎始育。

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

第二个幼崽一离育儿，第三个胚胎就始育，就这样一直循环下去。

There, the early spring weather can be too warm and the grapes begin to develop before they should.

在那里，早春的天气可能太温暖，葡萄提前始育。

Around 7 weeks the male sex organs start to develop because of a gene on 'Y' chromosome called 'SRY'.

大约7周左右，男性性始育，这是由于“Y”染色体上有一种叫做“SRY”的基因。

The caterpillar doesn't really start forming or developing until that egg is laid, and then the clock really starts ticking.

毛毛虫直到产卵才真正始形成或育，然后时间始推移。

Later in pregnancy, probably around 28 weeks, the fetal auditory system really starts forming so they can start to hear.

在怀孕后期，大约 28 周左右，胎儿的听觉系统始真正育，因此他们可以始听到声音。

Then, after two days, a little chick will begin to form inside the egg, just on the top of the yolk.

过两天之后, 一只小鸡就会在鸡蛋之中展露雏形, 从蛋黄顶部始育。

The sperm and the egg, basically they come together, and then they start developing.

精子和卵子基本上结合在一起，然后始育。

The whole thing increases in size, and bundles of cells start developing into support structures.

整个结构增大，细胞束始育成支撑结构。

At that time, I really started developing really under eye bags.

那时，我真的始在眼下育。

And so let's start with the biggest phylogenetic tree of all, phylogenetic tree of life.

让我们从最大的系统育树始，即生命之树。

Girls develop breasts and their  bodies become able to have babies.

女孩的乳房始育，她们的身体始具备生育能力。

And listen, I started off in neural development.

听着, 我始育。

The womb represents the very first place in which life takes form.

【form】子宫就是生命始育的地方。

Around 24 weeks in, the lung structures that swap out oxygen and carbon dioxide, called alveoli, start developing.

大约在第24周时，负责交换氧气和二氧化碳的肺结构——肺泡始育。

Upon successful fertilization, the zygote immediately begins developing into an embryo and takes about three days to reach the uterus.

成功受精后，受精卵立即始育成胚胎，大约需要三天时间到达子宫。