It's a pulsating star that swells and shrinks periodically.

它是一颗脉动的恒星，周期性地膨胀和收缩。

Lemmings periodically commit mass suicide, and no one knows just why!

旅鼠会周期性地进行大规模自杀，但是没人知道究竟是为什么！

For example, one of the themes in Aeschylus' work is that violence is cyclical.

例如，埃斯库罗斯作品的主题之一是暴力是周期性的。

This one is characterized by the cycles of hypomania and dysthymic or persistent depressive episodes.

其特征是周期性的轻度躁狂和心境恶劣或持续性抑郁发作。

Or it could loop around in a periodic way, like in some video games.

或者它可以进行周期性循环，就像一些游戏一样。

Base metals, extremely cyclical, very levered to a manufacturing cycle.

基础金属，极具周期性，与制造业周期紧密相连。

" This summer we had scientists on board, and we were able to observe global warming through melting glaciers, simple as that, it's astounding, it's not cyclical, climate change is exponential" .

" 这个夏天我们有科学家在船上，我们能通过冰川融化观测球变暖，就那样简单，非令人震惊，不是周期性的，球变暖越来越。"

A bigger budget has been outlined for 2016, though it is unclear how it will be financed, and recurrent spending will be pared back.

布哈里已为2016年勾勒了一个更大的预算（尽管目前还不清楚钱从哪来），而且周期性的开支将得到削减。

Some students work consistently over the course of the year, averaging between eight and twelve hours a week. Other students work periodically and have secured jobs that allow them great flexibility in their work schedules.

有的学生一整年都在工作，平均一周工作8到12个小时；有的则周期性工作，他们有稳定的工作，这样就可以在工作日程上有很大弹性。

The ancient Babylonian priests who spent a fair bit of time staring at the sky had already noted that there was an eighteen-year pattern in their recurrence, but they didn't have the mathematics to predict an eclipse accurately.

古巴比伦的祭司们花了相当长的时间盯着天空，已注意到这种周期性的变化有一个18年的规律，但他们没有精确预测日食的数学公式。

Two broods of cyclical cicadas will emerge.

两代不同周期性的蝉群将出现。

It tells our bodies when to wake up, eat and sleep in a cycle -- a series of activities that repeat themselves day after day.

它会周期性地提示人体苏醒，进食，睡觉的时间——这些活动每天都会重复进行。

Periodic surges have occurred ever since and have increased in magnitude and frequency this century.

自那以后，周期性的涌浪一直在发生，本世纪的幅度和频率都有所增加。

Not necessarily the very light trend you see here, but trending in periods.

并不必然是你这儿看到的轻微的趋势 可能是周期性的趋势。

El Nino is a periodic warm current in the southern Pacific Ocean.

厄尔尼诺现象是南太平洋的一种周期性暖流。

We'll be looking at various, innovative energy efforts periodically, starting with one underway in Scotland.

我们正在周期性地关注能源领域各种创新性的努力，从苏格兰正在进行的一个能源工作开始。

I remember the boats heaving periodically, on the huge gently rolling waves.

我记得船在波浪中周期性地起伏。

The best guess is that the disease has taken hold in China and there is a high risk that it spreads around the world- it may even become a recurrent seasonal infection.

最可能的猜测是，这种疾病已在中国扎根，而且在世界范围内传播的风险很高——它甚至可能成为一种周期性的季节性感染。

The cyclical narrative became essential in one of the rituals of the Eleusinian Mysteries, and the symbols of the cult became the ear of corn and a torch, which signifies Demeter's search for Persephone.

周期性叙事在厄琉息斯密仪的仪式之一中变得至关重要，崇拜的象征物变成了玉米穗和火把，其象征着德墨忒尔寻找珀尔塞福涅。

They believed the lack of body composition changes in their study wasn't due to a potential limit to protein intake, but likely because the subjects were not given a proper periodized training program.

他们认为在之前的研究中，身体成分之所以没有变化，可能是因为受试者可能没有进行适当的周期性训练，而不是蛋白质的吸收存在限制。