长时间

The equipment may be temperamental; the telescope mounting must be as rigid and controllable as for long-exposure astrophotography.

而且CCD经常变化无常，望远镜的支架必需足够坚固，并且对于长时间曝光要易于操控。

The chiefest of these—and the reason for this whole discourse—was Asu'a.

他们支撑了很长时间，他们的力量是慢慢地消失的。

It isn't easy to be inspired in that spontaneous way for long periods at a stretch.

一连很长时间以这种即兴方式获得灵感是不容易的。

We have been at this a long time.

我们已经合作了很长时间。

How long at intervals do you go to see him?

你隔多长时间去看他？

How long will you see him at intervals?

你隔多长时间去看他？

If sexual intercourse must happen, then it should be for the sole purpose of begetting children and presumably at long intervals.

如果必须要的话，只能是为了得到子嗣的唯一目的而且大概得长时间的间隔。

This book consists of my recollections of a man with whom I was thrown into close contact only at long intervals and I have little knowledge of what happened to him in between.

这本书包括我对一个人的回忆，这个人和我虽然非常接近，但是隔开很长时间才碰一次面，他平时的情况我几乎一无所知。

Besides, I also like swimming, skating and go out with friends for fun once a while. because she goes to school far away and we therefore only meet with each other at long intervals. Well,this is my life,simple and happy!

除此之外，我还喜欢游泳，溜冰，偶尔也和最好的朋友出去玩，因为她在外地上学，所以我们很长时间才见一次面，这些就是我的生活，简单快乐。

We've been waiting for so long,and at last it comes true!

我们等了很长时间，终于实现了！

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。