adenotrophic viviparity [昆] 腺养胎生 ; 腺营养胎生
ovo-viviparity 卵胎生
haemocoelous viviparity [无脊椎] 血腔胎生
pseudoplacental viviparity [昆] 伪胎盘胎生 ; 伪胎盘生殖
seasonal viviparity 季节胎生
viviparity y 胎生
half viviparity 半胎生
placental viviparity 有胎盘的胎生
Sharks display three ways to bear their young, varying by species, oviparity, viviparity and ovoviviparity.
鲨鱼有三种繁殖方式，它们的繁殖方式因物种而异，分别是卵胎生、胎生和卵胎生。
Every birds bird is oviparous, and it is viviparity however.
凡禽鸟都是卵生，而它却是胎生的。
"Viviparity has evolved about a hundred times in reptiles," said herpetologist Rick Shine of the University of Sydney in Australia.
澳大利亚悉尼大学的爬虫学者瑞克.谢利（Rick Shine）说，“胎生在爬虫类动物中有了成百倍的进化，所以它们不再多产也很正常。
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