Their findings could help to engineer plants that grow better and more effectively in conditions with higher levels of carbon dioxide.

VOA: special.2010.01.26

If you did that what would happen is you would see antibody levels rise even more sharply than before.

如果这么做,会发生什么,与第一次接种相比,抗体浓度急剧上升

耶鲁公开课 - 生物医学工程探索课程节选

I think people here in all levels of the profession are more educated than in Brazil.

我觉得这儿各个职业层次的人都比在巴西受到的教育好。

关于巴西 - SpeakingMax英语口语达人

The agreement sets targets to prevent the Earth's average temperature from rising more than two degrees Celsius above pre-industrial levels.

VOA: special.2009.12.26

That rate of rise is steeper so they--antibody levels go up more rapidly and they reach a higher level.

同时,上升速度也更加迅速,以达到更高的浓度水平

耶鲁公开课 - 生物医学工程探索课程节选

All agreed that global temperatures should not rise by more than an average of two degrees Celsius above pre-industrial levels.

VOA: special.2009.07.11

So if on each iteration of merging I'm doing eight things or more generally, N. That then begs the question, how many levels of this tree are there actually?

可见对于合并我需要迭代8次,一般情况下是N，这取决于具体问题，那么在这棵树中一共有多少层呢？

哈佛公开课 - 计算机科学课程节选

More than one thousand children living nearby were reported to have high levels of lead in their blood.

VOA: special.2009.08.31

And as you go to higher and higher levels, those energy levels, as you saw in the case of hydrogen, are more closely spaced.

当能级变得越来越高，那些高能级的轨道，就会变得越来越接近，正像你在氢原子里看到的那样。

麻省理工公开课 - 固态化学导论课程节选

The researchers said those with the highest level of cortisol were five times more likely to die from cardiovascular causes than those with the lowest levels.

VOA: special.2010.10.12

And if we lower our expectations, we lower our stress levels and we will enjoy life more.

如果能降低期望，降低压力水平，我们会更享受生活。

哈佛公开课 - 幸福课课程节选

There are increasing demands that future development be more sensitive to rising sea levels and the threat of storm surges.

VOA: standard.2009.11.09

Scientists warn climate change will lead to rising sea levels, more devastating floods and hurricanes, longer lasting droughts and other extreme weather phenomena.

VOA: standard.2009.08.31

The study looked at leptin levels in more than 700 elderly adults who did not have dementia.

VOA: standard.2009.12.30

There are five different levels. And then you get more money as you reach the different levels.

VOA: standard.2010.07.16

The researchers studied US government nutritional data and fat levels in the blood in more than 6,000 adults for at least six years.

VOA: standard.2010.04.25

"With the high unemployment levels you want more job investment to come into the state,".

VOA: standard.2009.10.27

Obviously,unemployment at high levels means that there is more demand for public services,".

VOA: standard.2009.08.25

"But the hitch is now news coming out of Tehran, which suggests they may be actually looking to purchase at more highly enriched levels up to 20 percent.

VOA: standard.2009.10.19

We're talking about more natural disasters, increased levels of disease.

VOA: standard.2009.11.06

So working with the government of Morocco,we are hoping to really help to see blossom a lot more economic activity at the lower levels that will then from the bottom-up build prosperity,"

VOA: standard.2009.11.03

Thai economists are warning Thailand's unemployment levels could reach 1.3 million people this year, more than double the530,000 people who lost their jobs last year when the unemployment rate stood at 1.4 percent.

VOA: standard.2009.03.09

This report is about the latest effort to reduce the record and rising casualty levels among U.S.troops in Afghanistan, as President Barack Obama considers sending tens of thousands more troops into harm's way.

VOA: standard.2009.11.02

The male brains, especially nerve cell rich parts of the brain associated with thinking and remembering, seemed to have sustained more long term damage from high lead levels than the brains of the young women.

VOA: standard.2009.12.19

After returning from a trip to Afghanistan, Senator Daniel Inouye, who heads the powerful Senate Appropriations Committee, issued a statement this week appearing to support the request by General McChrystal for more troops, although Inouye said more discussion would be needed before any final decision on troop levels is made.

VOA: standard.2009.10.15