胚胎学：研究胚胎和胎儿的形成和发育的学科。
Study of the formation and development of an embryo and fetus.
胚胎学：研究胚胎和胎儿的形成和发育的学科。
To cause the expulsion of(an embryo or fetus)before it is viable.
胎儿皮脂在婴儿的皮肤上形成，以保护其免受水环境的伤害。
Vernix caseosa has formed over the baby’s skin to protect it from its watery environment.
这是胎儿形成过程中令人疑惑的挑战之一：在胚胎成长过程中，这种对称和不对称的组合是如何进化出来的？
It is one of the intriguing challenges of foetal development how this combination of symmetry and asymmetry evolves as an embryo grows.
胎儿皮脂——白色的干酪质的物质——已经在婴儿表面形成了，它可以保护婴儿免受水环境的影响并帮助婴儿舒适地通过产道。
Vernix caseosa a white cheesy substance has formed over the baby’s skin to protect it from its watery environment and to help ease her through the birth canal.
由于那些干细胞来自胎儿，它们本来就是要通过自身繁殖来形成新的人体组织，因此理论上它们具有产生肿瘤的潜在可能。
The theory is that because these stem cells are fetal cells, they are designed to proliferate and give rise to new tissue, which means they have the potential to produce tumors.
内层细胞形成扁圆形的胚胎盘，拍胎盘将会发育成胎儿。
The inner cells form a flattened circular shape called the embryonic disk, which will develop into a baby.
如果Chong的研究小组能够证明，胎儿酒精综合征导致人类出现表观遗传变异，也许我们在生命形成的更早阶段就可以发现它。
If Chong's group can confirm that fetal alcohol syndrome causes epigenetic changes in humans too, it might allow the syndrome to be spotted earlier on in life.
安德森医学博士在第一个三个月孕期内没有给孕妇化疗，这时期是胎儿的重要器官形成期，出生缺陷的风险是最高的。
Chemotherapy is not given at M. D. Anderson during the first trimester of pregnancy, when vital organs are still forming and the risk of birth defects is highest.
说明胎儿股骨远端次级骨化中心初始时其内存在软骨管，软骨管对次级骨化中心的形成起作用。
It was concluded that the cartilage canals of fetus play great roles in formation of secondary ossification center and exist in primary secondary ossification center.
人外泌汗腺细胞的克隆形成率为7.3%，与人胎儿角质形成细胞（7.7%）比较差异无统计学意义（P>0·05）。
There was no obvious difference in the cell clone efficiency between human fetal eccrine sweat gland cells (7.3%) and human fetal keratinocytes (7.7 %, P>0.05).
但人的心识应该是在胎儿的脑形成以后才出现的，胎儿的脑还没有形成的时候哪里有心识？
However, the mind of a fetus is supposed to appear only after its brain has developed. Before the brain forms in the fetus, where is the fetus's mind?
无名指与食指的长度比例是胎儿在发育过程中形成的，如果无名指相对较长，则表明胎儿在发育过程中较多受到了雄性激素的刺激。
The length ratio between those two fingers is determined during the development of the fetus and the relatively longer ring finger indicates greater exposure to the male hormone androgen.
无名指与食指的长度比例是胎儿在发育过程中形成的，如果无名指相对较长，则表明胎儿在发育过程中较多受到了雄性激素的刺激。
The length ratio between those two fingers is determined during the development of the fetus and the relatively longer ring finger indicates greater exposure to the male hormone androgen.
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