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

它是一颗脉动的恒星，周期性膨胀和收缩。

Many Buddhists eschew it periodically to instil compassion, foster progress towards enlightenment and improve their chances of a favourable rebirth.

许多佛教徒会定期不吃肉，以培养慈悲心怀，促进他们走向开悟，并提高他们涅槃的机会。

From that time he became periodically ill.

从那时候起, 他就定期生病。

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

旅鼠会周期性进行大规模自杀，但是没人知道究竟是为什么！

Since there is no global ocean, rivers and lakes periodically dry out.

由于没有全，河流和湖泊会定期干涸。

Deliveries of fresh food such as fruit happen periodically throughout the year.

像水果这样的新鲜食品都会全年定期送货的。

So, in order to rectify this, we have to periodically add an extra day to the calendar.

所以，为了纠这一误差，我们必须定期日历上额外增加一天。

We are now seeing that in fact Mars probably does have water – not liquid water – that there is ice just below the surface and there's even just recently tantalizing evidence that perhaps water does flow periodically...

我们现看到火星上或许真的有水存——不是液态水——但是以下存着冰，最近甚至有迷惑性很高的证据表明这些下水或许会有周期流动。

STEP 2 Launder your bra in a machine periodically. Close the clasp, fold the cups together, place it in a lingerie bag, and wash it in cold on the gentle cycle.

定期用洗衣机洗涤内衣。扣上扣环，将罩杯折叠一起，放内衣袋中，用最温和的程序冷水洗涤。

The pleasure even of one's lover may become boring periodically.

但甚至是来自爱的欢乐也会定期变得无聊。

I would, you know, meet periodically famous people or people that were very wealthy.

我会定期会见名人或非常富有的人。

Maybe having a door mat that you can clean periodically.

也许有一个定期清洁的门垫会有所帮助。

California is riddled with geological fault lines that periodically ruptures the biggest.

加州到处都是周期性断裂的质断裂带。

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

我们周期性关注能源领域各种创新性的努力，从苏格兰进行的一个能源工作开始。

Also, be sure to change your password periodically.

而且，还要定期更改你的密码。

They enjoyed their midnight meal so much that they determined then and there to form a club and have such entertainments periodically.

他们很喜欢这次宵夜，于是当场决定成立一个俱乐部，定期举办这样的活动。

So those are gonna start to come out, the stadiums we're gonna do are gonna come out, you know just kind of periodically through out the year.

所以计划会开始实施, 我们会进入体育场馆，你知道的，今年会定期那里演出。

From there, stopping periodically to eat some edible berries, we struggled behind our cousins through the heavily brush and shrub covered footpaths to Black Duck Cove to visit the cemetery where our grandmother, whom we never knew, was buried.

从那里开始，我们时不时停下来吃一些可食用的浆果，我们堂兄弟姐妹身后艰难穿过浓密的灌木丛和灌木覆盖的人行道，来到黑鸭湾，参观埋葬我们素不相识的祖母的墓。

The Robo3000's have to periodically communicate with the Robo5000 to see if an update is worth getting; they have to determine whether the benefits of an update outweigh the loss in production.

机器人 3000 也必须定期与机器人 5000 通信，看是否有值得进行更新；它们必须评定更新的益处是否大于生产上的损失。

So for six months, he periodically would look up and say, " Sonia, did you get the application? " And I'd say, " David, I told you, it's useless."

所以六个月的时间里，他会时不时抬头问，“索尼娅，你收到申请了吗？”我说，“大卫，我告诉过你，这没用的。”