英语释义

• of or having or occurring by means of a placenta;

  "all mammals except monotremes and marsupials are placental mammals"

• mammals having a placenta; all mammals except monotremes and marsupials

片语

placental adhesion胎盘粘连

placental hook胎盘钩

placental barrier[胚] 胎盘屏障

placental immunity胎盘免疫

placental membrane胎盘膜

placental sinus胎盘窦

placental enzymes胎盘酶

placental abruption[妇产] 胎盘早剥；胎盘早期剥离

placental globulin胎盘球蛋白

placental migration关于胎盘移行

placental transport[生理]

英汉例句

• terbutaline crosses the placental barrier and blood-brain barrier of the fetus, which may lead to an autistic-spectrum disorder and other developmental disorders.

  特布他林穿过胎盘屏障和胎儿的血脑屏障，可能导致自闭癥系列障碍和其他精神障碍。

• sloths and their relatives branched off from all other placental mammals about 100 million years ago.

  树懒及其亲缘大约在一亿年前与其它的胎盘哺乳动物分道扬镳。

• dr. katzourakis’s discovery thus reveals the great antiquity of foamy viruses. they were already infecting the common ancestor of all placental mammals back when dinosaurs ruled the earth.

  katzourakis博士的发现表明泡沫病毒非常古老，当恐龙主宰地球的时候，它们已经感染了所有胎盘哺乳动物的共同祖先。

• the issue is contentious because the fossil record suggests that placental mammals did not expand, in terms of the number of different species, until after 65 million years ago.

  这个问题存在争议是因为化石记录显示胎盘类哺乳动物在物种数量方面只有在行星撞地球之后才开始了扩展。

• here is another partial mole in a case of triploidy. note the scattered grape-like masses with intervening normal-appearing placental tissue.

  另例三倍体部分葡萄胎。显示有分散的葡萄状团块，内有正常外观的胎盘组织。

• there are addition concerns of fetal and placental injury during the mother seizure which can lead to an increased risk of miscarriage.

  在母亲癫痫发作期间还有其它对胎儿和胎盘的损伤，最终可能导致流产风险增加。

• in this view, placental mammals evolved into distinct species before the asteroid hit of 65 million years ago, and many would have survived the mass die-out that polished off the dinosaurs.

  这种观点认为胎盘类哺乳动物在行星撞地球之前已经进化出了不同的物种而且很多都在令恐龙灭绝的灾难中幸存了下来。

• scientists had thought that even if cancer crossed the placental barrier, it would be rejected by the baby「s immune system.

  传统的生物学理论认为，即使一个癌细胞能穿过胎盘屏障，它也将会被婴儿的免疫系统排斥。

• the animal and its acquired toxicity is unique among placental mammals.

  这种获得毒素的形式在胎盘类哺乳动物里是独一无二的。

• methods primary disease and complication of pregnancy were actively treated, maternal nutrition was increased and placental perfusion was improved.

  方法积极治疗原发病和妊娠合并癥，增加母体营养，改善胎盘灌流量；

• is it human placental fluid, or, as some claim, horse」s placental fluid?

  这种胎液是人的，还是像其它传闻所说，是马的胎液？

• 「the fossil record continues to show that the origin of modern placental mammals postdates or is at the cretaceous-paleogene boundary, 」 he said.

  他说：「化石记录一再证实现代胎盘类哺乳动物的起源是在白垩纪-早第三纪分界点的时候或那之后。

• a plausible reason is that all the dinosaurs had been killed off, except the line that evolved into birds, and the placental mammals speciated into the ecological niches that had been left vacant.

  一个可能的原因是所有恐龙除进化为鸟的一支外都死掉了，胎盘类哺乳动物才在被空閑出来的生态龛中得以进化。

• the inspection has not heard fetal heart rate, suspected placental abruption, medical emergency cesarean section were fetal, pregnant women had a narrow escape.

  经检查已听不到胎心，怀疑是胎盘早剥，医护人员紧急进行了剖宫取胎术，为孕妇捡回一条命。

• chorion: the outer membrane enclosing the embryo in reptiles birds and mammals. in placental mammals it contributes to the development of the placenta.

  绒毛膜：在爬行类动物，鸟类及哺乳类动物中包含胚胎的外膜，在有胎盘哺乳动物中与胎盘的发育有关。

• but the syncytin genes we use today may have actually replaced an ancestral one that a virus bequeathed to the very first placental mammals.

  但我们今天使用的合胞体蛋白基因可能实际上已取代了最初病毒传给第一个胎生哺乳动物的基因。

• background oxidative stress has been proposed as a mechanism linking the poor placental perfusion characteristic of preeclampsia with the clinical manifestations of the disorder.

  背景胎盘灌注差是先兆子痫的特征，有人提出氧化应激是将胎盘灌注差与该病的临床表现相联系的一种机制。

• i am not even certain what is meant by placental fluid.

  我甚至不确定“胎液」到底指的是什么。

• pregnant women are also cautioned not to clean kitty litter boxes because of the risk that toxoplasma crossing the placental barrier and causing complications.

  怀孕的女性也要注意，不要去倒猫沙盒，因为会有弓形虫穿过胎盘屏障，导致并发癥的风险。

• the team suggests that homocysteine may have effects on brain structure and function or lead to subtle damage to the placental vasculature that compromises oxygen delivery to the fetus.

  研究者还推测同型半胱氨酸可能改变脑组织结构和功能，或对胎盘血管产生小的破坏引起胎儿氧供减少。

• medication factor:some medicines can affect embryonic development by placental barrier, such as, sleeping pill, antiallergic agent, diphenlhydantoin, adrenal cortical hormone and cyclophosphamide.

  药物因素：有些药物能通过胎盘屏障影响胚胎发育，如安眠药、抗过敏药、苯妥英那、肾上腺皮质激素、环磷酸胺均可导致胎儿畸形。

• these lice would not show up in his tree, dr. smith said, unless they had been able to transfer to the placental mammalian species, and most lice do not regularly switch hosts.

  史密斯博士说这些虱子不会在他的系统树上出现，除非它们转变成寄生在胎盘类哺乳动物身上的物种，而大多数虱子不会经常变换宿主。