At the same time, the health care needs of aging populations are expected to grow, intensifying the shortage of nurses.

VOA: special.2010.06.07

And I think there was a time when that sense of dominion was used as justification for using those resources only to serve human needs.

我想，有一段时间里，这种统治感,被人们当做使用资源的借口,仅仅为了满足人类的需求。

普林斯顿公开课 - 人性课程节选

Okay, so 1 is a viable answer in some contacts that needs constant time, the same amount of time no matter what.

在需要常量时间的情况下,答案是1，不管怎样，总时间是,相同的。

哈佛公开课 - 计算机科学课程节选

A navigator needs to know what time it is on his ship and also the time at another place of known longitude -- at the very same moment.

VOA: special.2010.07.14

The style of warfare that emerges in this period, apparently for the first time, is what we call the hoplite phalanx and each half of that needs to be explained.

显然,这个时期第一次出现了,一种独特的战争形式,那就是重步兵方阵,我来给大家分别解释下这两个词

耶鲁公开课 - 古希腊历史简介课程节选

That needs to be understood. But this time, we need to put the story of emancipation at the center of this narrative, because what really transformed the United States, were not those battles.

VOA: special.2011.04.09

It occurs because blood flow gets reduced in that blood vessel and so the heart muscle, which is actively beating all the time, needs large quantities of oxygen provided by blood can't get the blood through the vessel.

发病原因是冠状动脉血流量降低,因为心肌搏动永不停歇,随时需要血液供给大量氧气,发病时血液无法正常流过血管

耶鲁公开课 - 生物医学工程探索课程节选

Radovan Karadzic says , he will not attend the opening day of his trial because he needs more time to prepare his defense.

VOA: standard.2009.10.26

He adds that in a time of global economic crisis, Russia needs to consider the need to keep such a large force in Chechnya.

VOA: standard.2009.03.26

"The Brazilian government deeply regrets,therefore, that the joint declaration has neither received the political recognition it deserves nor been given the time it needs to bear fruit."

VOA: standard.2010.06.09

Another study author,Ned Sahin, a post-doctoral fellow at Harvard University and the UC San Diego School of Medicine, says scientists have suspected for some time that the traditional understanding of the brain needs revision.

VOA: standard.2010.01.28

But after eight years of war, amid rising casualties and wavering American public support, and with huge national security issues at stake, he says the administration needs to take its time and get the decisions right.

VOA: standard.2009.09.22