Extending out from the placenta is a thick group of blood vessels and other strong tissue.

从胎盘延伸出来的是一组厚厚的血管和其他坚固的组织1H5GxK7_a4w%a4。

It looks like a rope.

它看起来像一根绳子r5sUN-E)[X。

This is the umbilical cord.

这是脐带.]uTpugt]N+;G52。

The umbilical cord connects the forming baby to the placenta and his mother.

脐带将发育中的婴儿与胎盘和他的母亲连接起来)b|]D1jeOdSD5v15nuXM。

There are one or two major veins inside this cord.

脐带内有一、两条主干静脉-=RI)O5-Q;#!+Ul--z。

They carry the blood full of nutrients from the placenta to the baby.

它们将充满营养的血液从胎盘输送给婴儿893cE4g!y+td(p%w。

The umbilical cord supplies these nutrients until the baby is born.

脐带供应这些营养物质，直到婴儿出生zB06z_*sM9nG。

Normally, when a baby is born doctors place a clamp, a holding device, on the umbilical cord.

通常情况下，当婴儿出生时，医生会在脐带上放置一个夹具，这是一种夹持装置&OQ)~a_;]q]lEZL。

This stops the flow of blood from the placenta to the baby.

这会阻止血液从胎盘流向婴儿c~YN)#3!Rvu~T。

Then, they cut the thick cord.

然后，他们剪断这条粗绳子oFG=un7nk,Nbj8]%w4K。

They clamp and cut the umbilical cord very quickly - usually between ten to twenty seconds after the baby is born.

他们通常在婴儿出生后10到20秒以内，很快地夹住并切断脐带QA-TiL6MrYE。

Recently, a group of doctors in Mexico and the United States studied a group of 358 mothers and their newborn babies.

最近，墨西哥和美国的一组医生对358名母亲和她们的新生儿进行了研究k1LPnR_HPGT(NLT1。

They wanted to research the effects of delaying the cord clamping procedure especially in healthy full-term newborns.

他们想要研究推迟脐带夹闭程序的影响，特别是对健康的足月新生儿的影响jalU5-_Q1E;Y.N,.。

They wanted to see if delaying cord clamping would affect the babies’ stores of iron.

他们想知道，推迟夹住脐带是否会影响婴儿的铁储存Nn^F^A3EpP6。

They hoped it would increase the amount of iron in the babies’ bodies.

他们希望这能增加婴儿体内的铁含量QUi!=_^[^C[qzPp3Nohh。

The doctors divided the mothers and babies into two groups.

医生将母亲和婴儿分成两组3XxDZ_@v;!2S1@O+。

For one group, they clamped and cut the umbilical cords about ten seconds after the baby was born - like normal.

对于其中一组，他们在婴儿出生后大约10秒时夹住并切断脐带--就像正常情况一样EY7v5F1tIOSZ^k@J。

For the other group, the doctors waited two minutes after birth before clamping and cutting the umbilical cord.

对于另一组，医生们在出生后两分钟时才夹住并切断脐带loJ5TH&Ug&C%Z8pDd。

When the cord remains attached for more time, the extra blood from the placenta can continue to flow through the umbilical cord.

当脐带保持连接的时间更长时，来自胎盘的额外血液可以继续通过脐带流动ITV]ipK;b^~UC3.38。

This blood contains many nutrients helpful to the baby.

这种血液中含有许多对婴儿有益的营养物质K+t!Z^LF_[.7KHZmz。

The blood also contains iron.

血液中还含有铁M1=Y^WzoYyr^7]YzTElk。

A larger supply of iron can help a baby to avoid anaemia.

更多的铁供应可以帮助婴儿避免贫血ea.kVH1;|,。

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