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。

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

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

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。

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

夜，你的身体会周期性地醒来，这就是所谓的微觉醒。

Contracting the muscles periodically, makes the membrane curve abruptly, causing a series of very rapid clicks.

通过定期收缩肌肉能让硬膜突然弯曲，形成一系列飞快的“啪啪”声。

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

这是我们年来周期性地看到的一小部分现象。

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！

The training taught students to attend such events together. If separated, they should check on each other periodically.

教学生们结伴参加此类活动。分开，她们应该不时地查看对方。

Factories are shutting down periodically and I'm just not able to keep as many cars on my lap.

工厂定期关闭，我无法让那么的车停这儿。

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。

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性的病毒，40年来周期性地影响着非洲地区。

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

由于没有全球海洋，河流和湖泊会定期干涸。

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

加州到处都是周期性断裂的地质断裂带。

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。

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

许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。

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

所以，为了纠正这一误差，我们必须定期日历上额外增加一天。

The team followed up by counting ants periodically on specific sections of the coffee bushes during the days that followed.

之后团队定期计算咖啡灌木中某一特定部分的蚂蚁数量。

It's a defense ring against rodents and other vermin. Zalem drops them periodically, to keep rats from climbing the tubes.

是防老鼠用的保卫环。为防止老鼠们攀爬管道，他们会定期从萨雷姆落下来。

Private insurers periodically collect money in the form of premiums paid by individuals or their employers.

私人保险公司以个人或雇主支付保险费的形式定期筹钱。

The best way to protect against this risk is to periodically give yourself a retirement checkup.

要防止这种风险，最好的办法就是定期检查自己的退休账户。