Menstruation is really just a very normal body life cycle.

月经其实只是一个非正体生命周期。

Jellyfish have a complex and interesting life cycle.

母生存期既复杂又有趣。

Which means starting from entire life cycle of onboarding.

这意味着从入职整个周期就要开始。

Where do most plants start their life cycle?

大部分植物生命周期大多从哪里开始？

But Maria explained and painted their life cycle.

但玛丽亚做出了阐释并绘制了它们生命周期。

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

回到幼体期，重开始生命周期。

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

蝴蝶一样，母在生命周期不同阶段有不同变体。

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

其他母一样，灯塔母生命周期由两部分组成。

She's just coming over to study the life cycle of silkworms.

她只是过来跟我一起研究蚕生命周期。

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

后续还将完成拟南芥在空间“从种子到种子”全生命周期实验，以获得太空种子。

D) Studying the full life cycle of the enzyme as the first step.

D）研究酶整个生命周期作为第一步。

Life cycle is the series of changes something goes through from birth to death.

生命周期是事物从出生到死亡所经历一系列变化。

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生命周期。

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

它们茎在生命周期中死亡又重生，基本上使它们不朽。

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

在它们生命周期这个特定时期，这段时间是相当关键。

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

盖亚最数据引发了恒星生命周期中发现。

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

这些元素在恒星生命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.

但它们生命周期更短，只有2种存活方式。

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

科学家们猜想在这些遥远区域，恒星生命过程是否也是一样。

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

在 2018 年一项研究中，科学家们假设文明甚至能以化石燃料来驱动生命周期。