This crisis might last for a long period of time.

此次危机可能会持续很长一段时间。

Be sure to do some eye exercises to relax your eyes after you study for a long period of time.

在长时间学习后，一定要做眼保健操来放松眼睛。

In fact, there is another type of friend—one that has not been with us for a long period of time, but fills our mind at some moment.

事实上，还有另一种朋友，他虽然很长一段时间没有和我们在一起，但却会在某个时刻充满我们的心灵。

The manager and the businessman talked for a long period of time, but when he was asked for advice, the businessman stopped for a while and then said, "I have no advice to give."

经理和商人谈了很长一段时间，但当商人被问及建议时，他停顿了一会儿，然后说：“我没有什么建议可以给你。”

Smoking a lot of cigarettes can harm and even kill over a long period of time.

长期大量吸烟会危害身体健康，甚至导致死亡。

Oil or vinegar based salad can be stored for a long period of time without refrigeration.

含油或醋的沙拉可以储存很长一段时间，而且不需要冷藏。

Trackers, which are ongoing projects that look at trends or customer satisfaction over a long period of time.

一个正在进行的项目——“追踪者”，在研究很长一段时期内的趋势或客户满意度。

For a long period of time and in many parts of the country, a traveler was a welcome break in an otherwise dull existence.

很长一段时间，在美国的许多地方，旅行者是一种受欢迎的打破沉闷生活的方式。

Diabetes is caused by a group of metabolic disorders in which there are high blood sugar levels over a long period of time.

糖尿病是由一组代谢紊乱引起的，代谢紊乱后，血糖水平长期偏高。

For a long period of time and in many parts of the country, a traveler was a welcome break in an otherwise dull existence.

很长一段时间，在美国的许多地方，旅行者是一种受欢迎的打破沉闷生活的方式。

Occasionally , a sequence of fossil-rich layers of rock permits a comprehensive look at one type of organism over a long period of time.

偶尔，一个富含化石的岩层序列可以让我们持续并全面地观察一种生物。

In such studies, researchers would need to follow groups of children with and without music lessons over a long period of time—even if the assignments are not completely random.

在此类研究中，研究人员需要在很长一段时间内对上音乐课和未上音乐课的不同小组的儿童进行追踪——即使任务并不是完全随机的。

The empty shell of a snail or clam may be left behind, and if it is sufficiently durable and resistant to dissolution, it may remain basically unchanged for a long period of time.

蜗牛或蛤蜊的空壳可能会被留下来，如果足够持久和抗溶解，它可能会在很长一段时间内基本保持不变。

The bar was formed by the mud and sand deposited here over a long period of time.

河里的泥沙淤积在这里，年深日久便成了沙洲。

Ever leave an expense report undone for a long period of time?

有没有长时间的搁置一份费用报表呢？

You can leverage process improvements over a long period of time.

你可以在很长一段时间内调整过程改进。

Those characters meant so much to me over such a long period of time.

在如此长的时间里，这些人物对我来说意味深长。

I thought they would never let me off for such a long period of time.

他们会让我放这样一个长假吗？

Can two languages co-exist in a stable fashion over a long period of time?

是两种语言能够以一种稳定的趋势长期共存？

This is the only way to keep that motivation going over a long period of time.

这是唯一能让动机持续相当长一段时间的办法。

Gojko: Story CARDS aren't really intended to be kept for a long period of time.

Gojko：故事卡本意并不会长期保存。

She always thinks every tattoo over very carefully and for a long period of time.

每一个纹身都是经过她很长时间的深思熟虑的。

Climate is the overall combination of all these events over a long period of time.

气候，指的是在一个相对较长的时间内，所有这些事件的结合体。

Anyone who sits down for a long period of time may be at risk, the researchers say.

研究人员说，所有坐很长时间的人都处于危险之中。

And taking selenium over a long period of time could have toxic effects, they found.

他们还发现，长期食用硒可能会产生毒性效应。

If they transmit heat to our cells, they can damage tissue over a long period of time.

如果磁场加热了细胞，就会对我们的组织造成长期性的损伤。

Over a long period of time, though, even a smallish difference in compile times adds up.

但是，时间一久，编译时间上的微小差异也会累积成明显的差异。

How can you motivate a person to be a team player after a long period of time as a loner?

如何才能让一个不合群的人富有团队精神呢？

The prospect of high unemployment for a long period of time remains a central concern of policy.

长时间内高失业率的前景将成为政策关注的焦点。

Paradoxically, all painkillers can cause a headache if taken regularly over a long period of time.

一个悖论是，所有的止痛药，如果长时间服用都可能导致头疼。