The lungs of a fetus secrete a liquid that mixes with its mother's amniotic fluid.
胎儿的肺部会分泌一种能与母亲的羊水混合的液体。
There have been no studies of the effects of a low carbohydrate diet on pregnancy, so its effect on the fetus, if any, is unknown.
目前还没有关于怀孕时低碳水化合物饮食影响的研究，因此如果它对胎儿有什么影响也是不知道的。
Studies of animals, for example, have shown that when a rat experiences stress during pregnancy, it can cause epigenetic changes in a fetus that lead to behavioral problems as the rodent grows up.
例如，对动物的研究表明，老鼠在怀孕期间经历压力会导致胎儿表观遗传发生变化，进而导致啮齿动物在成长过程中出现行为问题。
There be certain chemicals in fertilizers used to crop-dust cotton that affect the unborn fetus.
作物粉尘中使用的化肥中有某些化学物质会影响胎儿。
When the fetus first receives the stimulation, it is startled.
当胎儿在第一次接受刺激时，他被震惊。
Mercury is a potent neurotoxin that can harm a developing fetus.
汞是一种很厉害的的神经毒素，可以伤害到发育中的胎儿。
Mother-to-child infection: the trypanosome can cross the placenta and infect the fetus.
母婴感染：锥虫可穿过胎盘并感染胎儿。
The fetus diverts the reduced blood supply to its brain and heart and away from its limbs.
胎儿转移他四肢的血液流向大脑和心脏，以应对血液供应减少。
Expectant mothers may not know that what they eat affects the tooth development of the fetus.
准妈妈也许不知道她们所吃的食物会影响到胎儿的牙齿发育。
Many imaging tests are not performed during pregnancy so as not to expose the fetus to radiation.
许多成像测试在怀孕期间不能执行，以免使胎儿暴露在辐射中。
Drinking can harm a developing fetus, putting a baby at risk for birth defects and mental problems.
饮酒会伤害腹中发育中的胎儿，可能会带来先天缺陷和精神问题。
Most notably by the end of this week your baby will no longer be an embryo but will be considered a fetus.
这周末你的婴儿很明显已经不再是一个胚胎了，可以被看作胎儿了。
Compared to most mammals, human females give birth to a fetus, and it stays helpless a very long time.
与大多数哺乳动物相比，人类女性生育和保持胎儿处于无助的幼年期的时间更长。
Many experts are worried that BPA causes an abnormal development of the fetus and complications in delivery.
许多专家都很担忧BPA会造成胎儿的畸形发育以及生产过程中的并发症。
This finding demonstrates that the fetus is sensitive to BPA in mice and likely also in humans, Taylor said.
这一结果证明了老鼠胚胎对BPA的敏感性，人类也可能如此，Taylor说。
Most notably, by the end of this week, your baby will no longer be an embryo, but will be considered a fetus.
这周末你的婴儿很明显已经不再是一个胚胎了，可以被看作胎儿了。
His explanation is suggestive of fetus in fetu(fetus within in a fetus), sometimes known as a "parasitic twin".
他的解释暗含了胎中胎的一些想法，也可以成为“寄生胎”。
A fetus is bathed in a sterile fluid, Turley says, and therefore does not need to close wounds to prevent infection.
胎儿是生活在无菌的流体中，因此无需缝合伤口来阻止感染，特尔说。
A mummified fetus of at least seven months 'gestation was found in Tut's tomb along with a tinier, more fragile fetus.
在图坦卡蒙墓穴中发现的一个木乃伊胎儿，她至少已经在娘胎中待了七个月，墓中还有一具更小更脆弱的木乃伊胎儿。
Could a pregnant woman be charged with child abuse if she smokes, or be denied chemotherapy if it might hurt the fetus?
如果一个孕妇吸烟，她会被控虐童吗？或者处于对胎儿的考虑，她可能无法得到化疗？
But after repeated trials of the same stimulation, 30 seconds apart, the fetus gets used to the sound and doesn't react.
但之后重复试验同样刺激，分别用30秒，胎儿对所用声波没有反应。
The ultrasound monitor is put in the patient’s line of sight, and she must also listen to a description of the fetus.
超声胎儿监护仪宜在孕妇的视线内,并且她也必须要听取有关胎儿的描述。
Alcohol can disturb the normal development of a fetus, leading to a lifetime of learning disabilities and social problems.
酒精会扰乱胎儿的正常发育，并引起他一生的学习障碍及各种社交问题。
Women's exposure to pesticides, solvents and persistent organic pollutants may potentially affect the health of the fetus.
妇女对杀虫剂、溶剂和持久性有机污染物的暴露可潜在影响胎儿的健康。
This is probably because a fetus starved of oxygen will send oxygenated blood to the brain in preference to rest of the body.
这可能是因为一个缺乏氧的胚胎会首先把充氧的血液输送到脑部，然后才送到身体的其他部位。
The current law, passed in 1967, permitted abortion only until a fetus was "viable", which was assumed to be at 28 weeks.
现行的相关法律颁布于1967年，规定只有在胎儿能成型存活，相当于28周孕期以后才可以终止妊娠。
Doctors generally recommend adding about 300 calories a day to your diet to provide adequate nourishment for the developing fetus.
医生通常建议每日摄入300卡路里的热量，这样就足以为成长中的胚胎提供足够的营养。
There have been no studies of the effects of a low carbohydrate diet on pregnancy, so its effect on the fetus, if any, are unknown.
目前为止还没有关于怀孕时低碳水化合物饮食影响的研究，因此如果对胎儿有什么影响也是不知道的。
And research suggests that the effects of maternal depression on the fetus can lead to complications both during and after pregnancy.
而且研究表明，产妇抑郁对胎儿产生的影响可能会导致妊娠期内或之后的并发症。
And research suggests that the effects of maternal depression on the fetus can lead to complications both during and after pregnancy.
而且研究表明，产妇抑郁对胎儿产生的影响可能会导致妊娠期内或之后的并发症。
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