1. The majority of sharks give birth to live young, a reproductive method known as ovoviviparous.
大多数鲨鱼都是胎生下仔，这是一种称为卵胎生的繁殖方式。

2. Some reptiles, such as certain snakes and lizards, are ovoviviparous, meaning their eggs develop and hatch internally before giving birth to live offspring.
一些爬行动物，如某些蛇类和蜥蜴，是卵胎生的，意思是它们的卵在内部孵化后生产活体幼崽。