They also didn't know which fathers smoked while the children were in the womb, or if either parent smoked after the babies were born, when their brains would still have been developing.

他们甚至也不知道这些孩子们的父亲是否当着孕妇吸烟，或者当孩子降生后，当他们的大脑还处于发育期时，双亲中是否有人吸烟。

youdao

We all know that babies start eavesdropping while they're still in the womb. So when they come out, they know their mother's voice.

我们都知道婴儿从还在母亲肚子里时就开始偷听了，所以当它们降临人世后，都能分得出自己母亲的声音。

youdao

Research suggests we can be programmed to be fat while still in the womb, with a mother-to-be's lifestyle affecting the health of her baby for years to come.

研究表明，准妈妈的生活习惯会影响婴儿日后的健康。 所以，有些人还未出生就注定是个胖子。

youdao

I sort of narrated what I was doing." Researchers think babies begin developing language skills while they are in the womb.

VOA: standard.2010.05.05

He's narrating in great detail what happened while he was in the womb. Where does this knowledge come from?

他花了很大笔墨很详细地描写了,他还在子宫里发生的事，但他是怎么知道的呢？

耶鲁公开课 - 1945年后的美国小说课程节选

The researchers reason that this mutation must have arisen in one of the twins while in the womb.

BBC: Scientists track leukaemia's origins 'back to the womb'

Half had been exposed to up to five ultrasound scans while in the womb, while the rest had had only one ultrasound exposure before birth.

BBC: Pregnant woman undergoing an ultrasound

While in the womb, foetuses are free to somersault in their amniotic sacs, and this constant movement has so far hindered clear images of growing brains.

BBC: Babies' brains to be mapped in the womb and after birth