次卵膜 deutovarial membrane
次级卵泡 [组织] secondary follicle
次级卵母细胞 [细胞] secondary oocyte ; or second oocyte ; Second oocyte Secondary oocyte Oocyte ; D
第一次卵裂 First Cleavage
次级卵黄囊 [胚] secondary yolk sac
第一次卵裂周期 first cleavage cycle
每次只产一卵的 uniparous
次级卵泡期 secondary follicular phase
多次产卵 multiple spawning
青蛙一次产出成千上万只卵，只为了少数几个子代成蛙，这是多么大的浪费！
What a waste for a frog to lay so many thousands of eggs for just a couple of juvenile offspring!
雌性草海龙一次大约能产卵250枚，而照看这些卵的任务却由雄性承担。
The female produce 250 eggs at a time and the male looks after them.
有一次，爱迪生看见母鸡孵小鸡，为了研究，他也坐到卵上，专心地孵了一整天。
Once, Edison saw some hens hatching chicks. For the sake of research, he sat on some eggs for a day in full attention.
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