zài / shēng / wù / kè / shàng / wǒ / men / xué / xí / le / luǎn / shēng / hé / tāi / shēng / de / qū / bié在生物课上,我们学习了卵生和胎生的区别。In biology class, we learned the difference between oviparous and viviparous reproduction.