视频解说中文翻译：
从6至11周是整个孕期中变化最大的时间，在这个时间段里，胚胎会慢慢的发生形态改变，疯狂的长大至以前的五倍大。这时胎儿有差不多200多种细胞逐渐形成，肌肉和神经也开始抽搐。这时的胎儿已经有一个肝脏，两个肾脏和胃。这时一个人类婴儿的所有器官都已经形成虽然它还没有3英寸长。34.2512周后，胎儿就开始处于孕中期，也就是怀孕期间的中间3个月。虽然她还没有一个拳头那么大，但是他已不在那么脆弱，当然流产的危险也大大的降低。在第一个孕期也就是头三个月的时候是最常见的，因为这时候细胞刚刚形成，加上免疫系统不平衡，或者是妈妈的压力都可能增加流产的风险。在怀孕的时候只有百分之五十的卵细胞可以存活。在大多数孕前期出现的流产事件中，妈妈们都没有意识到出了什么情况，大多数会将流产误以为是月经期到来。最初，当男性和女性胎儿还在慢慢成长的时候，他们具有相同的的生殖器，后来才慢慢有男女之别。
在12周的时候。男性和女性胎儿生殖器的唯一的区别就是向外延展的角度不同。根据这个角度，医生可以通过超声检查猜测婴儿的性别。要想看出男性和女性胎儿生殖器之间的明显区别，还需要几个星期。但不管在哪种情况下，性器官都在发挥其功能。男性睾丸生产睾酮，女婴卵巢源源不断的供应卵细胞。
4个月后，胎儿仍然对发生的变化产生反射。他的神经系统开始运转，行为开始受大脑支配。在大约5半英寸长的时候，他开始移动，肌肉弯曲，手指和脚趾分开，骨头开始变得坚硬。胎儿的手比脚先发育，这可能是因为一旦婴儿出生后会首先用到手抑或是在胎儿其他感觉器官发育的时候，手作为重要的感觉器官也同时发育。
胎儿的眼睛的慢慢发育并逐渐向中间靠拢让胎儿看起来更加有人类面孔的味道。中枢神经系统开始从大脑向身体的其他部位延伸，使大脑可以逐步建立总的控制网络。例如心脏不再是自发地跳动，相反，大脑会调节肌肉并保持每分钟140至150次的泵血速度。运用医生的探头可以听见胎儿的心跳。由于神经系统延伸到全身，因此胎儿能对这些刺激产生反应，并且越来越敏感。
从第4个月开始，胎儿就会做很多复杂的动作。她可以弯曲，扭转她的四肢，手指，腰部，腿部和脚趾。更令人难以置信的是，她已经开始意识到他周围的空间。四维超声扫描可以看到胎儿能够摸她自己的头。在这些计算机生成的图像里面，许多都是从四维超声扫描里面抓取的。
传感器会源源不断反馈信息给大脑，胎儿的活动可以逐步的完善渐渐的趋于完美。当胎儿在探索她身体的时候，她会花很多时间锻炼她的抓握反射力，按她的手，脚，手指，脚趾，甚至她的脐带。40.22双胞胎似乎有更多的乐趣，他们会互相抓来抓去，看起来就像与对方搏斗一样。同卵双胞胎早在十二周的时候就开始互相触摸，在第14周的时候就会触摸手臂，腿，身体或者是嘴巴。这种亲密的身体接触在女性双胞胎之间会更早的发生。
非同卵双胞胎在子宫里面会被内膜分离开来，他们没有同样的机会碰到他们兄弟姐妹。通过思维扫描可以看到，子宫内膜就在图片中间的位于下方的胎儿的肘子上面。当同卵双胞胎慢慢长大，他们几乎都在接触，触摸彼此的手，脸，脚然后逐渐变得更加了解自己和对方。胎儿早期在子宫内持续不断的接触是可以看得到的，这也是贯彻他们整个生命的令人难以置信的亲密接触反应。在第18周的时候，胎儿的消化系统开始有活动的迹象。从这个思维扫描途中可以看出，胎儿没必要吃也没必要喝。但是她开始吞那些支撑他浮动的液体—羊膜液。但大多数的液体会透过她的泌尿系统然后再回到羊膜液中。在第18周的时候;，母亲可能第一次开始意识到胎动。也许胎儿已经开始活跃了很长时间，但是只有现在胎儿的动作足够大的时候才能让妈妈感受到。
视频解说英文原文：
The period from 6 to 11 weeks has seen the most dramatic transformation of entire pregnancy with the fetus undergo metamorphosis and growing nearly five times bigger in the frantic five-week burst. Over 200 types of cells have been made, muscles and nerves are twitching. There’s a liver, two kidneys and stomach no bigger than the great of the eyes. All the organs of a human baby have formed and it is still less than 3 inches long. After 12 weeks, the fetus under the second trimester, the middle three months of pregnancy. Although she is still no bigger than the fist, she is much less delegate and there is less risk of miscarriage. Miscarriages are the most common in the first three months when new cells are developing and imbalance and immune system, stress, or of the mother have previously given birth to a boy could all increase the risk. Only 50 percent feudalized eggs survives all the way of through pregnancy. In most miscarriages which occur in first trimester, the mother is unaware of what is happened and mistake her miscarriages for having her period. Initially, as they develop, male and female fetuses have identical genitals. Both sexes have protuberance, which for boys will become a penis and for girls a quotes. At 12 weeks. The only difference is the base stick out at different angles. Looking at ultrasound and expert may guess the sex of the baby based on this angle. But it will be a few more weeks before there is a clear difference between male and female genitals. But in each case, the sex organs are already hard the work. For male, the testicles are producing testosterone and the ovaries of the baby girl are ready busy making her own supply of eggs.
After 4 months, the fetus is still running on reflexes. What the changes are taken place. Her nerve system is upon running and her movements are increasingly being controlled by her brain. At 5 and half inches long, she is much more mobile now. Muscles are flexing, fingers and toes are separated and defined and her bones are hardly.
Hands develop before the feet, which could be because there going to be used first once the baby is born or it could be because the hands being important sensory organs developed at the same time as all the other senses are beginning to form.
The eyes have grown close together giving the fetus more human look. The central nerve system extends connections from the brain to most parts of the body, allowing the brain to gradually establish total control. The heart for instance, is no longer beating spontaneously and spasmodically. Instead the brain regulates the muscles and keeps pumping blood at steady 140 to 150 beats per minute. Using the doctor probe, it is now possible to hear what the baby heart sounds likes.
As the nerve system extends throughout the fetus so to her capacity to respond to stimulus. She is becoming sensitive to touch and is prude through the mother’s abdomen. She is likely to scorm. From 4 months on, the fetus makes a lot of intricate movements. She can bend, flex, and twist her extremities, her fingers, waists, legs and toes. More incredible, she is already beginning to develop awareness of the space around her, it is called corporal ception.
The unconscious of body place in space and helps her…intereg the environment. This 4D scan shows actual footage of fetus reaching up to touch her head. In these computer generated images, the movements have been taken directly from the observations of the 4 D scans.
sensors give constant feed back to the brain, and the movement can then be refined and gradually perfected. As the fetus explores her body, she spends a lot of time practicing her grasping reflex, grabbing hold her hands, feet, fingers, toes and even her biblical cord.
Twins seemed have more fun, grasping and seemingly wrestling with each other. Identical twins show early contact at 12 weeks and by 14 weeks, are touching arms, legs, bodies and mouths. This close physical contact seems to occur earlier between female twins. 41.10 non-identical of fraternal twins are separated by membranes in the womb and don’t have the same opportunity to bump with their sibling, the membranes in the 4D scans can be seen just above the elbow of the lower twin across of the middle of the picture. As the identical twins grow bigger, they are almost always in contact, touching in hands, faces, feet and gradually becoming more aware of themselves and each other. This constant contact in the womb is mirrored in early life and is partly responsible for the incredibly close response at twins fell throughout their lives.
At 18 weeks, the fetus begins to mameglife outside the womb. Her digestive system show signs of activity. She has no need to eat her drink; bodies can be seen in this 4D image. She begins to swallow the fluid she is floating yet, the anomic fluid.
some in the digestive ways gather her in the testiness in form of greenish black paste called macolia. But most of the fluid passes through her urinary system and back out to rejoin in the anomic fluid. Around this time, the fetus is about 18 weeks old; the mother may become aware of its movements for the first time.
although the fetus has been active for quite sometime. It is only now that her movements are strong enough for her mother to feel.
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