And you wanna repeat that cycle four times.

这个呼吸过程要重复四次。

And it's actually repeated cycles of reinfection that can cause the most damage.

实际上，反复的感染循环才是造成最大伤害的原因。

Over a repeating cycle of 12 years, each animal is on duty for one year.

在12年的循环中，每只动物都会执勤一年。

Electrical currents are measured in frequencies-the number of times a wave repeats a positive-to-negative cycle.

电流用频率测量——电波从正极到负极循环的次数。

I continually repeat the cycle — theory, action, feedback — looking for a theory that's effective.

我不断重复这个循环——理论、行动、反馈——寻找有效的理论。

They rinse and repeat this cycle — theory, action, feedback — until they arrive at their destination.

他们精简并重复这个循环——理论、行动、反馈——直到他们到达目的地。

And Ella says to me that she is repeating the cycle of her own mother's life before her.

艾拉告诉我她的人生其实是在重蹈她母亲的覆辙。

As we continue to repeat the cycle, we strengthen this connection and this addiction in our brains.

当我们继续重复这个循环时，我们的大脑就会加强这种联系和这种上瘾。

Those are the enzymes that we want to carry forward, and we can repeat this cycle again and again.

它们是我们想要继续研究的酶，我们可以一遍又一遍地重复这个过程。

We repeat the cycle over and over.

我们一遍又一遍地重复这个循环。

They can repeat this cycle until they are studying as long as they feel is a good amount of time.

他们可以重复这个循环，直到他们的学习时间长到自己觉得有足够即可。

Fatigue in steel happens because of repeated cycles of loading.

钢材的疲劳是由于重复的载荷循环而发生的。

Just like we said earlier, economics and human psychology are intrinsically tied together, and tend to run in endlessly repeating cycles.

就像我们之前说的，经济学和人类心理学有着内在的联系，并且趋向于无休止地重复循环。

But basically, there's like a repeated cycle of those friends leaving.

但基本上，这些朋友的离开就像一个重复的循环。

But this changed after a repeated cycle of thoughtless spending and quickly escalated to high credit card balances, and I was paying hundreds in interest.

但这种情况在经过反复的轻率支出循环后发生了变化，并迅速升级为高额信用卡余额，我支付了数百美元的利息。

According to this theory, which is often termed the spiral view of history, human societies do repeat a cycle of stages, but overall progress observable in the long historical perspective.

根据这个经常被称为螺旋式历史观的理论，人类社会确实重复着一个阶段性的循环，但从长期的历史角度来看，总体的进步是可以观察到的。

Big and bright and beautiful, different every night but repeating the same cycle over and over, the moon is one of the best objects in the sky to observe, especially for someone just getting started.

又大又亮又美，每晚都在变化却按照同样的轨道前行，月亮是天空中最好的观察物，尤其是对于新手来说。

So what happens is, you apply a clock here that goes from low to high, stays a while high, goes from high to low, and after a while, it repeats the cycle.

所以发生的事情是，你在这里应用一个从低到高的时钟，保持一段时间的高，从高到低，一段时间后，它重复这个循环。