To generalise wildly, there are two ways to control fertility: to have children quickly and then use contraception to stop having more, or to space out births, leaving longer intervals between each.

广泛地说，有两种方式来控制生育：第一种，每个孩子出生间隔尽量短，然使用避孕方法以防止生育更多；第二种，将孩子出生时间拉长，使每个孩子间隔变长。

I encountered him only at rare intervals.

很少碰到他。

In order to remember things for a longer time, repeat the material in spaced intervals.

如果想记住事物记得更久，那就在间隔一段时间复习。

This kind of exercise is known as interval training.

这种锻炼方式被称为间歇训练。

In point of fact the three actions of perceiving, determining, and responding were sequential; but so infinitesimal were the intervals of time between them that they appeared simultaneous.

说句实在话, 从发情况到进行判断到作出反应本是一个连贯行为, 但在他身上表出来间隔时间太短了, 以至于成了同时发生了。

Lee Jordan, who was assisting the demonstration, was lazily Vanishing the vomit at regular intervals with the same Vanishing Spell Snape kept using on Harry's potions.

每过一阵，李。乔丹便懒洋洋地清空呕吐物，用是斯内普常对哈利药水使用消失咒。

A lot of people started turning to more extreme exercise of high intensity interval training.

许多人已经开始转向更极端更高强度间歇性训练。

And finally, we mentioned a burst of high intensity interval training.

最，提到了间歇性高强度训练。

Typically, the crew move through the interior of the ISS using an array of handrails which are situated at intervals on every surface.

通常情况下，机组人员通过一系列扶手在国际空间站内部移动，在国际空间站各个表面每隔一段距离就会安装一个扶手。

The interval between breakfast, lunch, and dinner should be about four hours.

早餐、午餐和晚餐之间间隔应该为四个小时左右。

Researchers tracked 19,000 men and women living in southern Italy during a four-year interval.

研究人员对居住在意大利南部1.9万名男女进行了为期四跟踪调查。

In contrast, lasers are so precise, you can target one cell in millions at precise intervals — every second, every minute, every hour — you name it.

相比之下，激光是如此精确，你可以在精确时间间隔里瞄准数百万个细胞中任何一个，一秒内、一分内、一小时内，你说了算。

Intervals may be selected systematically or randomly. Suppose we want to observe students' classroom behaviour.

时间间隔可以系统地或随机地选择。假设想观察学生课堂行为。

The variability, meanwhile, refers to the lack of a predictable interval between raise and result.

同时，可变性指是无法预测加息和结果之间差距。

They also stayed asleep for longer intervals.

睡眠时间也更久。

So we have to factor in the time interval, especially when space is changing.

因此，必须考虑时间间隔，特别是当空间正在变化时。

But suppose the earth could be covered with sensors spaced one foot apart, rising at one-foot intervals all the way to the top of the atmosphere.

假设地球上可以布满传感器，每个相隔1英尺从地面一直排列到大气层顶端。

For the second and third readings, the passage, expect the first sentence, will be read sentence by sentence, or phrase by phrase, with intervals of 15 seconds.

第二遍和第三遍将逐句或逐短语阅读，每句间隔 15 秒。

And they need to suck it in. That's why this interval is getting shorter.

它需要将猎物吸进来。这就是更新间隔变得越来越短原因。

Breed only on a short interval, a couple of days or a week or two.

繁殖期很短，只有几天或一到两个星期。