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

它是一颗脉动的恒星，地膨胀和收缩。

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

旅鼠会地进行大规模自杀，但是没人知道究竟是为什么！

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

我们正在地关注能源领域各种创新的，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.

我记得船在波浪中地起伏。

In the middle of the night, your body actually wakes up periodically, in something called microarousals.

在午夜，你的身体会地醒来，这就是所谓的微觉醒。

The electrons that move along an alternating current, on the other hand, periodically and consistently change direction.

另一方面，在交流电中移动的电子会地、持续地改变方向。

UNIDENTIFIED MALE: That's something we've seen in very small numbers periodically over the years.

这是我们多年来地看到的一小部分现象。

Better to leave it on, and use something else to periodically block the light reliably and rapidly.

最好不要关灯，用别的东西地可靠而迅速地阻挡光线。

Since then, North Korea has gone back, periodically, to using threats to get more money and food.

自那时以来，朝鲜经常地利用威胁来换取更多金钱和食物。

Ebola is a highly infectious virus that has affected areas in Africa periodically over more than 40 years.

埃博拉病毒是一种高度传染的病毒，40多年来地影响着非洲地区。

The best measure, they say, is the cyclically adjusted price-to-earnings ratio, or CAPE, developed by Yale economist Robert Shiller.

他们说，最好的衡量标准是地调整市盈率，即由耶鲁大学经济学家Robert Shiller提出的CAPE。

The grotesque grasshopper that relentlessly pulls time forward periodically winks at passersby.

怪诞的蚱蜢无情地把时间往前拉，地向路人眨眼。

Scientists know that volcanic eruptions have periodically cooled the climate.

科学家们知道，火山喷发地使气候变冷。

Well, they do come periodically, so this is not, you know, the first pandemic, right?

GB：好吧， 它们确实会地出现， 所以这并不是， 你知道的，第一次大流行病，对吧？

As the star turned into a white dwarf, it periodically ejected mass.

当这颗恒星变成白矮星时，它会地喷射物质。

Her sleep is terrible and she's periodically overcome by panic attacks.

她的睡眠很糟糕，而且她会地出现恐慌发作。

After that, it periodically shows up on funerary goods belonging to the pharaohs.

此后，它会地出现在法老的陪葬品中。

After fully charging, Siegeween will periodically fire slow-moving mini-stration bubbles toward her target, dealing Hydro Damage.

充满能量后， Siegeween会地向目标发射移动缓慢的小型治疗泡泡，造成水元素伤害。

And so fire periodically comes along.

于是火灾会地发生。

And it'll get flooded periodically, but it's not constantly wet.

它会地被洪水淹没，但并不是始终处于湿润状态。