视频英文解说中文翻译：
胎儿10周的时候仍然藏在妈妈的肚子里。但是母亲可以第一次看到藏在她子宫里面的秘密。怀孕三个月后就可以做第一次超声检查。透视子宫的超声检查也是人类对胎儿发展和母亲照料认识的一场革命性的发明。
StuidCanble教授是世界领先的妇产科专家之一。这些照片是由进入母体的探头通过高频声波发送形成的。这些声波可以穿透体内组织，很容易透过液性区如羊水区，但遇到像骨头这种固体组织时就会强烈的返回来。
这种可以形成内部图像的反射波跟X射线原理相似，但是不会有危险。超声波不会对胎儿造成伤害。子宫内，胎儿生活在液体里面，即使充满液体，超声波也可以动态成像显示胎儿的健康和发展的重要信息。第一次超声检查可以通过胎儿的大小而不是妈妈的最后一次月经周期准确的测出胎儿的预产期。除此以外，这次超声检查还能较早显示一些非决定性的诊断特点，如胎儿扭曲或异常等。
直到最近，人类胚胎的非侵入性研究已经代替了胎儿尸解或二维超声波扫描。但是现在，随着三维扫描技术的发展，这个领域已经被彻底改变了，而且可以实时监控的三维超声扫描并不比四维扫描逊色。
妇产科医生可以直接观察胎儿的生长，行为，胎儿对刺激的反应以及如何反应为胎儿的出生做准备。StuidCanble教授是这项新的三维扫描技术的知名先驱。这种三维超声扫描可以展现一个30周大的胎儿。这是一个32周大的胎儿在玩弄他的鼻子。这些4D影像是子宫内的胎儿在早期扫描的。
这是一个只有6周大的胚胎，胚胎在左边，右边比胚胎还大的是卵黄囊。这是一个只有几英寸长的8周大的胚胎正在开始他的第一次活动。除了能检查出宝宝是否健康，通过这次扫描还能发现怀孕宝宝的个数，是一个，两个还是两个以上。在家庭中有可变出生规律，如果母亲的家庭有异卵双胞胎的历史，那么你生双胞胎的几率就很小。当受精卵分化成两个的时候就可能会形成同卵双胞胎。这对双胞胎将共享相同的DNA，甚至可以共享同一个胎盘，但他们共享同一个羊膜囊的时间却只有百分之一。如果两个卵细胞同时被释放，并同时受精，那么这对双胞胎将不相同，也不会共享相同的DNA，在这种情况下，这对双胞胎将在子宫中分离出来，各自生活在自己的羊膜囊里。他们也有单独的胎盘，所以整个孕期，胎儿的血液浮动要被认真监测。与早产不同的是，其并发症是微乎其微的。
大约在一岁左右的时候，婴儿就很希望能走，但是这些建筑物会成为她成功踏出第一步的障碍。这些思维扫描显示的是十一二周大的胎儿在踢腿，锻炼他们的踏步反射。当她的脚触摸子宫底部时，神经系统就会引发所有的足部肌肉反应。在这个阶段，子宫内有很多类似的“基地”供胎儿弹跳。行走能力是一项重要的生存技能。胎儿运动的越多，反射就会越强。胎儿弹跳反射能力尤其在新生儿学着行走时能清楚的见到。
视频解说英文原文：
At ten weeks old, the fetus has been hidden from the outside world. But the mother is about to get her first glimpse of the secret of some folding inside her womb. Three months passes since conception, and the time is arrived for the first ultrasound scan. Ultrasound scans that peering into the womb has revolutionized an understanding of fetal development and care for the mother.
Professor Stuid Canble creates health clinic in
The reflected waves are connected to produce internal image similar to an X-ray but without danger. Ultrasound scans unlikely to cause any harm to the fetus. Inside the womb, the fetus lives in fluid, even along the filled with fluid and the ultrasound produces a moving image that to trained eye reveals important information about the health and development of the fetus. The first scan can also establish more accurate due day based on the fetus’ size instead of guessing from the date of the mother’s last menstrual period. The scan can also show early but not conclusive diagnostic features pointing, torturing and abnormalities.
Until recently, non-invasive research into the development of the human fetus has been restricted to fetal autopsies or greiny 2-dimensional ultrasound scans. But now, this area expiration has been revolutionized with the development of 3-dimentional scans and even more remarkably. Three-D scans which move in real-time no less 4-D scans.
Obstetricians can directly observe how the fetus grows, behaves, reactions to stimulation and how it reflexes help to prepare for birth and for survival outside the womb. Professor Canble is the world renown pioneer of this new scans and responsible for taking this incredible images. This scan shows a 30 weeks fetus youngling and this one a 32 weeks fetus playing its nose. These 4d images are some of the earliest ever taken of the fetus in the womb.
This is an embryo of just 6 weeks; the fetus is on the left and yolk sac still bigger than the fetus is on the right. Here the embryo is 8 weeks just over inches long, makes its first movements.
As well as checking the health of the baby, this scan gives the first opportunity to determine if you are pregnant with one baby or two or more. Mutable births running in families, if your mother’s family has a history of non-identical twins, then you are far more likely to have twins yourself. Identical twins are formed when eggs placing in two. The twins will share identical DNA and could even share the same placenta, but only one percent of the time when they share the amniotic sac.
If two eggs are released and fertilized at the same time, the twins are not identical or fertenal and don’t share the identical DNA. In this case, the twins are separated in the womb with each living in its own amniotic sac.
They also have separate placentas, so blood floating each twin is carefully monitor throughout pregnancy. Other than the slightly early birth, complications are minimal.
Even though she want be able to walk until she is around I years old. The building blocks to her first steps are present after just 11weeks in the womb. Those 4D scans show 11 and 12 week old fetuses kicking and pushing out their legs when stepping reflex. Away reflex action is pre-programmed biological anples. When her feet touch the base of the uterus, the nerve system triggers and all the metical muscle reaction in the legs. At this age, there are so much base in the uterus, the fetus bounces and lives around using the walls of the womb like trembling. The ability to walk is an important survivals skill. And more the fetus moves, the stronger the reflex grows. The stepping reflex can clearly be seen in newborns when the fetal dangle bubble the ground.
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