Jellyfish have a complex and interesting life cycle.

水母的存期既复杂又有趣。

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周期。

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

和蝴蝶一样，水母周期的不同阶有不同的变体。

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

和其他水母一样，灯塔水母的周期由两部分组成。

Where do most plants start their life cycle?

大部分植物的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空间“从种子到种子”全周期的实验，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周期。

Their stems dying and reborn in a life cycle that renders them essentially immortal.

它们的茎周期中死亡又重，基本上使它们不朽。

And that time is quite critical at this particular period of their life cycle.

它们周期的这个特定时期，这时间是相当关键的。

The latest data from Gaia sparked a discovery in a star's life cycle.

盖亚的最新数据引发了恒星周期中的新发现。

These elements exploded into space at the end of the stars' life cycles.

这些元素恒星周期结束时爆炸进入太空。

But they have a much shorter life cycle and stay alive in two ways.

但它们的周期更短，只有2种存活方式。

Scientists wonder if the life cycle of stars is the same in these distant regions.

科学家们猜想这些遥远的区域，恒星过程是否也是一样的。

In a 2018 study, scientists hypothesized that civilizations could even have fossil fuel-driven life cycles.

2018 年的一项研究中，科学家们假设文明甚至能以化石燃料来驱动周期。

In an earlier part of their life cycle, both cicely and hemlock have white flowers.

周期的早期阶，甜芹和毒芹都开着白色的花。

For thousands of years, they have been an important link in the forest life cycle.

也是千百年来，天然森林繁衍循环的重要环节。

So when it fails, just think that's just a part of its life cycle.

因此，当它失败时，只需认为这只是其周期的一部分。