Jellyfish have a complex and interesting life cycle.

水母的生存期既复杂又有趣。

But Maria explained and painted their life cycle.

但玛丽亚做出了阐释并绘制了它们的生命周期。

I was...reading about the life cycle of maggots.

真是很有趣的课题。

The juvenile then starts the jellyfish's life cycle all over again.

回到幼体期，重新开始生命周期。

Menstruation is really just a very normal body life cycle.

月经其实只是一个非常正常的身体生命周期。

Like butterflies, Turritopsis morph through multiple stages during their life cycle.

和蝴蝶一样，水母在生命周期的不同阶段有不同的变体。

Like other jellyfish, T. dohrnii goes through a two-part life cycle.

和其他水母一样，灯塔水母的生命周期由两部分组成。

Where do most plants start their life cycle?

大部分植物的生命周期大多从哪里开始？

Later, their life cycle experiments will be conducted to obtain space seeds.

后续还将完成拟南芥和水稻在空间“从种子到种子”全生命周期的实验，以获得太空种子。

When large mammals like grizzlies are hunted, evolution might select for speedier life cycles.

当灰熊这种大型哺乳动物被猎杀时，进化可能会选择更快的生命周期。