Further experiments to confirm that neutrinos have mass could help physicists determine which, if any, of these theories is correct.
进一步证实中微子有质量的实验可以帮助物理学家确定这些理论中哪一个（如果有的话）是正确的。
This, in turn, means they must travel slower than light and so have mass after all.
反过来，也就是说，它们的传播速度肯定比光速慢，因此它们应该是有质量的。
This, in turn, means they must travel slower than light and so have mass after all.
反过来这意味着它们必须以低于光速的速度前进，所以他们必须有质量。
They're different because they don't exist behind a screen; they're in our world, built from real physics, not simulations, they have mass and velocity and smell.
他们的与众不同之处在于他们不存在于屏幕里面，他们就活生生地存在在我们的世界里，是被真实的物体组成的，而不是模拟，他们有重量、速度和气味。
It has no size, but it does have mass, - and it has a lot of mass — three times the mass of the sun, ten times the mass of the sun, a hundred times the mass of the sun.
但是它有质量，而且质量很大，是太阳质量的三倍-，太阳质量的十倍，太阳质量的百倍，它有质量，没有尺寸。
Feng Xin: You just mentioned we have mass education, vocational education and elite education. Then, my question is: What exactly is the purpose of higher education?
冯欣：您刚才提到通俗教育、职业教育、精英教育，那我有一个问题，我们大学教育的任务到底应该是什么呢？
First the elusive particles, which theorists believe to be as abundant in the universe as photons, but which almost never interact with anything, turned out to have mass.
首先，人们发现这种难以捉摸的粒子具有质量。理论家相信它和光子一样，在宇宙中含量丰富，但是几乎从不与任何物质发生反应。
According to gradient theory early-developing regions should have mass transfer from early-developing regions to late-developing regions, but it does not happen as expected.
按照区域梯度理论应该发生的先发区域边际产业向后发区域的大规模转移，却没有按照预期的发生。
If discovered, scientists hope it will help them understand how particles have mass and provide the final piece in the Standard Model of physics, which was proposed in the 1970s.
如果发现它了，科学家们希望它能帮助他们理解粒子的质量如何形成以及为上世纪七十年代提出的物理标准模型提供最终的标志物。
According to observations of young sunlike stars, our Sun may have lost as much as six percent of its initial mass.
根据对年轻的类太阳恒星的观察，我们的太阳可能已经失去了它最初质量的6%。
All the isotopes of a given element have the same number of protons, but differ in their number of neutrons, and hence in their atomic mass.
给定元素的所有同位素都含有相同的质子数，但它们的中子数不同，因此它们的原子质量也不同。
Another way of countering drought is to have a limited amount of mass above ground and to have extensive root networks below ground.
对付干旱的另一种方法是在地面上种植特定数量的植物，并且确保地下有广大的根系网络。
Mass market paperbacks, which have been declining for years anyway, will probably disappear, as will hardbacks for mysteries, thrillers, "romance fiction," etc.
无论如何，大众市场的平装书已经衰落多年，且可能会消失，就像神秘小说、惊悚小说、“浪漫小说”等的精装书一样。
Several other mass extinctions in the geological record have been tentatively identified with large impacts, but none is so dramatic as the Cretaceous event.
地质记录中的其他几次大规模物种灭绝也被认为影响重大，但没有哪一次像白垩纪大灭绝那样夸张。
In the last decade or so, advances in technology have allowed mass-market labels such as Zara, H&M, and Uniqlo to react to trends more quickly and anticipate demand more precisely.
在过去十年左右的时间里，科技的进步让Zara 、H&M和优衣库等大众品牌能够更快地对潮流做出反应，更准确地预测需求。
They invented the paper machine so they could mass-produce paper—it didn't have to be handmade anymore.
他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。
They take up a teeny bit, but when we're thinking about the set up of the atom, we don't have to account for them as using up a lot of the mass.
它们占据了非常小的一部分，但当我们考虑原子的构造的时候，不用考虑它们会占用很多的质量。
Once you have started the boulder rolling, it develops momentum, which is defined by its mass and velocity.
一旦你开始让巨石滚动，巨石就会产生动量，这是由其质量和速度决定的。
Presumably, those environmental disasters could have been responsible for the mass extinction, including the death of the dinosaurs.
据推测，这些环境灾难可能是物种大规模灭绝的成因，包括恐龙的灭绝。
Mass layoffs and plant closings have drawn plenty of headlines and public debate over the years, and they still occasionally do.
大规模裁员和工厂关闭多年来经常成为媒体头条和公众争论的焦点，现在偶尔也是这样。
Excessively skinny models have been a point of controversy for decades, and two researchers say a model's body mass should be a workplace health and safety issue.
几十年来，过瘦的模特一直是争议的焦点，两名研究人员表示，模特的体重应该是职场的健康和安全问题。
Astronomers have long speculated that the missing baryonic mass might eventually be discovered in intergalactic space or as some large population of galaxies that are difficult to detect.
天文学家长期以来都在推测，最终可能会在星际空间或者是在难以探测的大量星系中发现丢失的重子质量。
Scientists have linked the mass extinction at the end of the Cretaceous with a meteorite impact on Earth.
科学家将白垩纪末期的大灭绝与地球上的陨石撞击联系起来。
Because these galaxies' mass is spread out over larger areas, they have far fewer stars per unit volume than do conventional galaxies.
因为这些星系的质量分布在更大的区域，它们每单位体积的恒星数量比传统星系要少得多。
These methods have revealed some unexpectedly immense formations in the deepest parts of the mantle; the largest of these is a buoyant mass of hot rock directly below Africa's southern tip.
这些方法在地幔最深处揭示了一些意想不到的巨大构造；其中最大的一块是在非洲南端正下方的一块热岩。
Based on general relativity, for example, scientists think dark matter exists because some cosmic objects behave as if they have more mass than we can see.
例如，基于广义相对论，科学家们认为暗物质的存在是因为宇宙物体的运转表明似乎它们有比我们能观测到更大的质量。
That number is likely to grow as a slew of major U.S. companies have announced mass layoffs this month.
这一数字很可能会继续增长，因为一系列美国大公司本月已宣布大规模裁员。
That number is likely to grow as a slew of major U.S. companies have announced mass layoffs this month.
这一数字很可能会继续增长，因为一系列美国大公司本月已宣布大规模裁员。
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