viviparity
n. 胎生;母体发芽
例句
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。