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They used a system of measurement called the Body Mass Index to define words like obese and overweight.
VOA: special.2009.07.21
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Now, gravity, well force, is equal to mass times acceleration, g and the acceleration due to gravity is g.
是重力，等于质量乘以加速度，由重力导致的加速度是。
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We've got wind, we've got a primeval chaotic, Watery mass or deep, and then surprise, There's just a word,"Let there be light."
我们有了气流，有了原始的混乱，狂放的水流，混沌，但奇怪的是，只有一句话，“要有光“
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"I offer Catholic Mass,' cause I'm a Catholic priest by profession,and so it is actually the feast day of Mary,Mother of God.
VOA: special.2009.12.28
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It is a double column, You can see, it starts with hydrogen and goes to mercury in ascending order of atomic mass.
双纵栏，你们看到，从氢开始,然后到水银，按原子质量的升序排列。
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He and his team studied tree mass, dead wood and soil carbon in twenty-five mangrove ecosystems in the Indian and Pacific Oceans.
VOA: special.2011.05.10
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An open system, as the name describes, allows mass and energy to freely flow through the boundary.
开系，顾名思义，允许质量和能量自由地,流过它的边界。
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It involves the relationship of energy, mass and the speed of light, written as the letter c.
VOA: special.2010.07.16
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You put the standard mass here and you put some other fellow at the mass you're looking at there.
把标准质量放在这里,然后把待测物体放在这里
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Cities in the United States and Europe have increased security in and around their mass transportation systems.
VOA: special.2010.04.03
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What de Broglie is saying we can know the wavelength of any matter at all, as long as we know its mass and it's velocity.
通过德布罗意所说的,只要我们知道了,它的质量和速度，我们可以知道,任何物质的波长。
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"Mass" is the closest Mister Bernstein ever came to joining the styles of Broadway and classical music.
VOA: special.2009.08.02
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It's a mass, obviously, for death and burial and the commemoration of those who have died.
它是弥撒曲,显然是为死亡和葬礼,以及祭奠那些亡灵
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Brian Jungen's sculptures skillfully explore both mass culture and tribal culture in new and interesting ways.
VOA: special.2009.11.13
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This is what he says in this first passage. He says: If we study speech from several viewpoints simultaneously, the object of linguistics appears to us as a confused mass of heterogeneous and unrelated things.
这也是他在第一篇文章里说的话：,我们同时从几个角度读这篇文章，这时语言学乱的像一锅粥,没有系统毫无关联性。
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She was trying to gather strength and courage to push through a mass of busy shoppers.
VOA: special.2009.09.05
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We have a table of the elements with properties varying periodically with atomic mass, so we compress all of that information and refer to it as the Periodic Table.
我们有一个元素表，其中的元素的特性,随着原子质量的改变而引起周期性的变化，所以我们将所有的信息精简,将它变成一个周期表。
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Because the prints were mass-produced and not original works, they were not costly.
VOA: special.2009.09.02
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Further, the nucleus is assumed to be the seat of the essential part of the mass of the atom, and to have linear dimensions exceedingly small compared with the linear dimensions of the whole atom."
进一步的，核被认为是,原子主要质量所在的地方，和整个原子线性尺度相比,核具有很好的线性尺度“
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And,he captured them temporarily to record their mass, length and estimated age.
VOA: special.2009.07.07
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system is the opposite of the open system, no mass and no energy can flow through the boundary.
孤立系与开系正相反，没有质量或能量,能流过它的边界。
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Moments that were days in the birth of fire and stars, moments of the struggle of all man and finally moments that showed the great mass of all humans' spirit.
VOA: special.2010.05.08
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And so we know the force for a particular mass, and we know the area of the piston.
我们知道每个质量对应的力，也知道活塞的面积。
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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
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Likewise for mass, we will take a chunk of some material and we will call it a kilogram.
质量也是这样,我们找来一大块材料,然后称它为 1 千克
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They also encourage people to work from home on a regular basis and use mass transit when they do commute.
VOA: standard.2010.07.26
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And now we're asking you to look at krypton, so the atomic mass is 36. You can actually just grab that handout the second handout on the exam and look at the periodic table there. So, which of the following ions listed is isoelectronic with krypton?
现在我们请大家来看一下氪原子，它的原子量是，36，大家其实可以拿出这张讲义,第二份关于考试的讲义,看一下上面的周期表，那么，下列离子中，哪一个是与氪原子是等电子的？
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In the same beachside neighborhood, a truck and tangled mass of corrugated steel are wedged against the house of Fai Faaita.
VOA: standard.2009.10.06
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But the acceleration it produces on the elephant and on the mass, are in an inverse ratio of their masses.
但这个力使大象和物体产生的加速度,与它们的质量成反比
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With some degree of confidence, I'm working with a reliable spring and then I will get the mass of the elephant.
这时我就对弹簧有信心了,我用的是一个可靠的弹簧,我能测出大象的质量
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