Because the prints were mass-produced and not original works, they were not costly.

VOA: special.2009.09.02

And the other thing to point out, which I don't know if this is true or not, but does anyone know -- well that's part's true, does anyone know what the atomic mass of lithium is?

另外需要指出的一点是，关于这点我不知道是不是真的，有人知道--这部分是真的，有人知道锂的原子量吗？

麻省理工公开课 - 化学原理课程节选

If a photon, which has no mass, can behave as a particle --And we know this.

如果一个没有质量的光子，像粒子一样运动--，我们知道这个。

麻省理工公开课 - 固态化学导论课程节选

More than ninety percent of these jobs will be in the private sector -- jobs rebuilding our roads and bridges, constructing wind turbines and solar panels, laying broadband and expanding mass transit."

VOA: special.2009.02.27

Mass and energy -- I'm an open system, right?

质量和能量--我是个开系，对吧？

麻省理工公开课 - 热力学与动力学课程节选

Port-au-Prince was overcrowded before the earthquake. The mass exodus from the capital presented an opportunity to relieve the strain.

VOA: standard.2010.07.16

It's this - its cells in this region here, this inner cell mass that that's the source of embryonic stem cells, cells from inner cell mass here.

就是这个,在这片区域的胚胎细胞,即内细胞群,而胚胎干细胞的来源所在,就是源自这里的内细胞群

耶鲁公开课 - 生物医学工程探索课程节选

Before the meeting Pope Benedict celebrated a large open-air mass in Valletta, attended by thousands of people.

VOA: standard.2010.04.18

So at a given level of overweight out here -twenty-seven, twenty-nine, thirty-one, thirty-three are the body mass index, the women are more likely to get Diabetes then the men are.

在超重情况下,如果体重一定,这里的27,29,31,33,表示体重指数,女性比男性更易患糖尿病

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

But the interim director of the U.S.Centers for Disease Control and Prevention, Richard Besser, says it will be months before any decisions are made about mass-inoculations.

VOA: standard.2009.04.30

They invented the paper machine so they could mass-produce paper-- it didn't have to be handmade anymore-- and they invented wood pulp paper so it didn't have to be made out of cloth anymore.

于是人们发明了造纸机从而可以大量生产纸-,而不再需要手工制作-,后来人们还发明了木浆纸,所以后来不再用布料来制纸。

耶鲁公开课 - 金融市场课程节选

It was the mass-issuance of mortgages to consumers with poor credit ratings that led to a rash of mortgage defaults and home foreclosures beginning in late 2007.

VOA: standard.2009.10.01

We can be precise about how much bigger by saying, "If the acceleration of a body to a given force is ten times that of a one kilogram mass, then this mass is one-tenth of one kilogram."

我们能精确地知道质量能大多少,只需要说,"如果物体在给定力作用下的加速度,是一个 1 千克物体的加速度的 10 倍,那这个物体的质量就是 1 千克的十分之一"

耶鲁公开课 - 基础物理课程节选

More vigils and tributes - hundreds of people crowded into the Church of Saint Anna in central Warsaw for a special mass for those killed in the crash.

VOA: standard.2010.04.12

First is the body mass index, you're going to see this a lot and you--some of you probably know about it already because it's out there in the popular literature.

首先是体重指数,我们会经常碰到这个概念,你们也许已经知道这个概念了,它经常在科普读物中出现

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Pope Benedict prayed for the inured and the two young women who died, telling Sunday's huge open-air Mass that he trusts "Jesus will embrace them in his kingdom."

VOA: standard.2009.03.22

This is going to have one-half mv squared where this is the mass of the electron.

有了电子的质量,就可以用1/2mv^2算出其动能。

麻省理工公开课 - 固态化学导论课程节选

The Mass was the largest event of this week-long trip to Africa.

VOA: standard.2009.03.22

The new textbook book was put together by the Documentation Center of Cambodia, a non-profit group tasked with recording the years of mass killing under the Khmer Rouge.

VOA: standard.2010.04.19

Eighty billion dollars of that total was to be pumped into the U.S.economy to promote development of renewable energy, urban mass transit, high-speed rail systems and clean energy jobs.

VOA: standard.2010.02.25

Pope Benedict holds an open-air Mass in Luanda Sunday.

VOA: standard.2009.03.20

Braima says the international community must prepare for a mass exodus of refugees from Darfur by pre-positioning aid in Chad, the Central African Republic and areas within Sudan where people are likely to go.

VOA: standard.2009.03.28

Australia's defenses against the outbreak of the H1N1 virus will be boosted when mass flu vaccinations start next month after officials fast-tracked a scheme capable of covering it's entire population of 21 million people.

VOA: standard.2009.08.25

In 1944,when many experts warned of mass starvation in developing nations where populations were expanding faster than crop production, Borlaug began work at a Rockefeller Foundation-funded project in Mexico to increase wheat production by developing higher-yielding varieties of the crop.

VOA: standard.2009.09.13

So if you have a mass killing of an ethno-religious group, carried out by a government in order to eliminate those people from their homeland, or to destroy their political and cultural potential - that is,by the conventional definition and most scholarly definitions, a genocide."

VOA: standard.2010.03.18