At the start of the 20th century, under-nutrition and childhood infections got in the way.

在 20世纪初，营养不良和儿童疾病妨碍了整体的。

Air pollution is claiming seven million lives every year and damaging children's development.

空气污染每年会夺走700万人的生命，并损害到儿童的。

Play time is very important in a cat's development especially hunting and catching prey.

游戏时间在猫的程中是十分重要的，特别是狩猎和捕捉猎物。

You got kids like me who haven't hit their growth spurt yet mixed in with these gorillas who need to shave twice a day.

竟然把我这种还没到青春期的孩跟那些一天刮两次毛的“大猩猩”混在一起。

Mine has a fully developed immune system.

我的宝宝有健全的免疫系统。

The fertilized egg develops into a fetus.

受精卵成一个胎儿。

Number five. Weak bones. Your body's bones grow throughout your childhood.

骨骼脆弱。骨骼的生长贯穿整个童年时期。

These eight thus now count as neurotypical.

因此这8例被定为典型。

Children and youth were stunted and severely malnourished, barely holding onto their lives.

“儿童和少年不良，严重缺乏营养，只是勉强存活下。

No wonder, then, there are difficulties. Physically, we become adults younger and younger.

如此一，困境自然便会出现。从身体的角度看，我们成熟早。

It can be safe as long as the swaddling allows a baby's legs to bend up and out at the hips, allowing the hip joints to develop normally.

只要能保证襁褓让宝宝的腿部可以弯曲并且臀部位置合适，臀部骨关节能够正常，那就是安全的。

The writers suggested a link between body mass index, brain development and " executive functions, such as working memory" .

作者认为，体重指数、大脑与" 工作记忆等执行功能" 之间存在联系。

Figuring out how humans acquire language may shed light on why some children learn to read and write later than others, Schafer says, and could lead to better treatments for developmental problems.

谢弗认为找出人类如何获取语言能力可以解释为什么一些孩子的读写能力晚于其他人，并且有助于更好的治疗儿童问题。

If that mutation were inherited from your parents or occurred early enough in your development, then the result would be that many or all of your cells contain this harmful mutation.

如果这种突变是从你父母那里遗传的，或者在你的早期就生了，那么结论是你的许多或所有细胞都含有这种有害的突变。

It helps determine how some of a developing embryo's cells differentiate and where they go.

它有助于决定一些中的胚胎细胞如何分化以及它们的去向。

They were three to five year olds that used screens more than the recommended one hour a day and what they found was that these children had lower levels of development in the brain's white matter.

他们是三到五岁的孩子，每天使用屏幕的时间已经超了（建议的）一时，他们现这些孩子的大脑白质水平较低。

I'll tell you to walk out this studio with your head down, but I know you haven't developed the leg muscles to pull that off.

我会叫你低头走出这个摄影棚，但我知道你的腿部肌肉还没所以走不了。

Well, one theory is that a male peacock's tail is a sign of his genes. Genes are part of the DNA in a cell that controls the physical development and behaviour of an animal.

一个理论是说雄孔雀的屏尾是其基因的一个展示。基因是细胞中遗传物质的一个组成部分，控制着动物的生理和行为方式。

They've been linked from everything from liver and kidney disease to developmental delays and behavioral disorders. There are more than 100 public schools in Detroit.

它们可能导致肝脏和肾脏疾病、迟缓和行为紊乱。底特律市有100多所公共学校。

Achondroplasia is characterized by disproportionately short limbs, a normal-sized torso, large head, and with a depressed nasal bridge, right here, a small face, and stubby hands, as well as the curvature of the spine.

软骨不全症以不符比例的四肢、正常大的躯干、巨大的头、以及扁平的鼻柱－－在这儿－－的面孔、以及粗短的手、还有弯曲的脊椎为特征。