科学家们得出结论，太阳风的活动必须遵循相同的周期。
The scientists concluded that the solar wind activity must follow the same cycle.
对于不同的鲎来说，其生理节奏的周期范围在22.2小时到25.5小时之间。
For different individual horseshoe crabs, the circadian period ranged from 22.2 to 25.5 hours.
通过将生物体与外部的周期信号完全隔离，生物学家了解到生物体有内部的生物钟。
By isolating organisms completely from external periodic cues, biologists learned that organisms have internal clocks.
在这重要的一亿年的周期内缺乏化石（记录），关于这一点，有一种解释是早期的动物是软体动物，所以它们无法形成化石。
One interpretation regarding the absence of fossils during this important 100-million-year period is that early animals were soft bodied and simply did not fossilize.
有可能在34小时之内得出结果，但正常的周期是12天。
It is possible to produce a result within 34 hours but the standard turnaround is 12 days.
月亮的周期必须是满月或接近满月。
火星绕太阳公转的周期是687天，这意味着火星上的1个地球年是687天。
Mars orbits the Sun in 687 days, which means 1 Earth year on Mars is 687 days.
现在我们继续讨论，谈谈轨道，特别是那些所谓的周期轨道彗星。
Let's continue our discussion now by talking about orbits, especially those of the so-called periodic-orbit comets.
数量的周期循环是小型哺乳动物的特征，它们有时似乎是由捕食者造成的。
Population cycles are characteristic of small mammals, and they sometimes appear to be brought about by predators.
卡特拉似乎是半规律地喷发的，典型的周期是每次爆发之间相隔30到80年。
Katla seems to erupt on a semi-regular basis, with typical periods between eruptions of between 30 and 80 years.
每隔10天的周期就会有一些特殊的恒星群出现，这些恒星群被称为decans。
Each period of ten days was marked by the appearance of special groups of stars called decans.
如果对它们的数量进行时间记录，就会发现它是很不稳定的——以不规则的周期急剧上升下降。
If their population is tracked through time, it will be seen to be particularly unstable—soaring and plummeting in irregular cycles.
那片现在是沙漠的地区和所有干旱地区一样，对降雨量相对更大或更小的周期极为敏感，因此那里的动植物分布发生了巨大且迅速的变化。
The areas that are now desert were, like all arid regions, very susceptible to cycles of higher and lower levels of rainfall, resulting in major, sudden changes in distributions of plants and animals.
作为全球唯一的固定货币，美元可能正处于最后一个漫长的周期。
We are probably in the last long lap of the dollar as the world's only anchor currency.
短而一致的周期，最后是客户反馈。
纠正失衡的周期尤其冗长。
Redressing the imbalances of this cycle will be an especially drawn-out affair.
然而，“这不是一个正常的周期，”他说道。
拉美经济通常是在兴旺-破灭的周期里打转。
权值越高，LPAR获得的周期比例越大。
The higher the weight, the larger the portion of cycles the LPAR will get.
所以得到一个方程，那我问，摆的周期是多少？
So I go to this equation, and so I ask, what is the period of a pendulum?
但是等时间长了以后，它们的周期必然会不同。
But wait long enough and you will see that, of course, the periods will be different.
在这种情况下，可以小批次在短的周期内处理缺陷。
In these cases, defects could be dealt with in small batches and short cycles.
但对于迭代项目来说，我们想要短的周期来做该工作。
But for an iterative project we want our short cycles to do that job for us.
这也意味着，周期T比圆形，轨道的周期大。
That also means that the period t must be larger than the period in your circular orbit.
先前的传染病特点是活动蔓延的周期持续数月。
Previous pandemics have been characterized by waves of activity spread over months.
RF协助了了一些包括唤醒与沉睡的周期与心脏功能的过程。
The RF helps to regulate essential processes, including waking and sleeping cycles and cardiac function.
理想的小睡遵循一个90 - 100分钟的周期。
The ideal nap, then, follows a cycle of between 90 and 100 minutes.
通过了解精力的周期，我们可以保持充满了能量从而避免疲惫。
By understanding the cycles of energy we can stay filled with energy and avoid burnout.
这些全球危机不仅仅是人类历史起伏不定的周期中的短暂跌落。
These global crises are not just dips and blips in the up-and-down cycle of human history.
这些全球危机不仅仅是人类历史起伏不定的周期中的短暂跌落。
These global crises are not just dips and blips in the up-and-down cycle of human history.
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