1.
Whale sharks are ovoviviparous, meaning that eggs hatch within the mother's body, and then are released.
鲸鲨是卵胎生动物，这意味着蛋在母体内孵化，然后生出来。
2.
A brood or litter, especially of kittens.
一胎生下的小动物一胎生下的小动物，尤其指猫
3.
The unborn young of a viviparous vertebrate having a basic structural resemblance to the adult animal.
胎基本结构与成年动物相似的胎生脊椎动物未出生的幼子
4.
Man and most other mammals are viviparous.
人和其他大多数哺乳动物都是胎生的。
5.
the offspring at one birth of a multiparous mammal.
一胎多仔的动物一次生的后代。
6.
Giving birth to living offspring that develop within the mother's body.Most mammals and some other animals are viviparous.
胎生的通过在母体中发育产生后代的。绝大多数哺乳动物和其它一些动物为胎生
7.
Establishment of spina bifida model and study of the mechanism of its formation in Wistar rat fetus
脊柱裂动物模型制作与胚胎发生机制探讨
8.
Animal Models of Fetal Growth Restriction
建立胎儿生长受限动物模型的研究进展
9.
"Fetus: Unborn young of any vertebrate, particularly mammals, after it has acquired its Basic form."
胎儿:一切脊椎动物,尤其是哺乳动物的未出生的幼儿。
10.
embryonic development of invertebrate
胚胎发育（无脊椎动物）
11.
embryonic development of vertebrates
胚胎发育（脊椎动物）
12.
higher vertebrates (reptiles; birds; mammals) possessing an amnion during development.
（胎儿）发育过程中有胎膜的高级脊椎_动物；如爬行类动物、鸟、哺乳动物。
13.
an animal organism in the early stages of growth and differentiation that in higher forms merge into fetal stages but in lower forms terminate in commencement of larval life.
动物生命的早期阶段，区别于胎儿高级阶段，以形成幼虫为结束。
14.
Delayed Implantation and Delayed Development, two Peculiar Reproductive Strategies in Chiroptera
翼手目动物特殊的生殖策略:胚胎延迟植入和延迟发育
15.
Supporting effect of non-animal contamination culture system on human embryonic stem cells growth
无动物源性培养系统对人胚胎干细胞生长的支持作用
16.
The offspring produced at one birth by a multiparous mammal.
幼仔一胎多子的哺乳动物一胎所产的后代
17.
monotremes and marsupials are aplacental mammals.
单孔类动物和有袋动物是无胎盘的哺乳动物。
18.
Having no placenta, as marsupials and monotremes.
无胎盘的无胎盘的，如有袋目哺乳动物和单孔目动物