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开始发育。

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

在那，的天气可能太温暖，葡萄提前开始发育。

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

九个后，第一个幼崽离开育儿袋，触发第二个胚胎开始发育。

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开始发育，它们很重、有8到12厘米长。

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。

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，男性性器官开始发育，这是由于“Y”染色上有一种叫做“SRY”的基因。

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

激素的中断阻止了青期发育开始或完成。

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

整个大，细胞束开始发育成支撑结构。

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，然后开始发育。

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

【form】子宫就是生命开始发育的地方。

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

经过两天之后, 一只小鸡就会在鸡蛋之中展露雏形, 从蛋黄顶部开始发育。

And listen, I started off in neural development.

听着, 我开始神经发育。

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

大约 24 周后，交换氧气和二氧化碳的肺部结构（称为肺泡）开始发育。

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

那时，我真的开始在眼袋下发育。

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开始形成或发育，然后时间开始推移。

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

受精成功后，受精卵立即开始发育成胚胎，大约需要三天才能到达子宫。

And the third trimester starts at 28 weeks – that is the time when the fetus's weight increases and the organs begin to grow.

第三个妊娠期从28周开始，胎儿重增加，器官开始发育。

Second, the eggs produced, by the female need to begin to develop on their own, forming an early stage embryo.

其次， 雌性产生的卵子需要开始自行发育，形成期胚胎。

Photos of brain organoids in particular, where you see them beginning to develop the shape of a real early human embryo.

特别是大脑类器官的照片，你看到它们开始发育成真正的期人类胚胎的形状。

For girls, breasts will start to develop around 10 to 11 years of age and is often the first outward sign of puberty.

对于女孩来说，乳房将在 10 至 11 岁左右开始发育，通常是青期的第一个外在迹象。