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。
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。
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。
They said the mother and members of her family had not had the health problems found in the fetus.
研究人员表示，这位母亲和她的家人都没患过这名胎儿身上发现的健康问题。
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。
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”。
And a male fetus that inherits a problem Dio3 variation from mom but a normal Dio3 from dad should be okay.
如果一个男性婴儿从母亲那遗传有问题的Dio3基因变体而从父亲那继承正常的Dio3基因本应该没有问题。
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。
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？
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。
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。
The Missouri Senate just passed a bill that would require doctors to talk about a fetus' development and its ability to feel pain.
密苏里州参议院最近通过了一项议案要求医生告知孕妇胎儿的生长及其感知疼痛的能力。
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。
According to the FDA's letter-grade system for drug safety during pregnancy, most psychotropic drugs pose a potential risk to the fetus.
根据美国食品药品管理局（FDA）的妊娠期用药安全评级系统（共五级，link），绝大多数精神病类药物对胎儿存在潜在危险。
The kind of NK cells that are good for getting lots of blood to the developing fetus are not as good for dealing with infection, and vice versa.
对发育中的胎儿血流有利的NK细胞不擅长对付感染，反之亦然。
The mouse babies were oversized because fat consumed by the mother causes the placenta to provide too many nutrients to the fetus, the study said.
研究表明，超大型鼠仔是由于母亲消耗的脂肪促使胎盘提供了过多的营养给胎儿而导致的。
Parents who have a family history of a severe genetic disorder use this test to determine the chances of the fetus developing a severe genetic disease.
一般有严重家族基因病史父母们用这项测试来检测胎儿患病的几率。
The authors conclude that quitting smoking during pregnancy without actively avoiding exposure to second-hand smoke may not protect the developing fetus.
作者因此得出结论，孕期开始戒烟的女性如果不主动避免吸二手烟的话，可能还是保护不了胎儿的健康发育。
The authors conclude that quitting smoking during pregnancy without actively avoiding exposure to second-hand smoke may not protect the developing fetus.
作者因此得出结论，孕期开始戒烟的女性如果不主动避免吸二手烟的话，可能还是保护不了胎儿的健康发育。
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