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"The eyes light up and click. It happens -- 'I didn't know you had this.'" Jenny Johnson is the executive director of marketing for the Online Computer Library Center.
VOA: special.2011.07.11
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Oedipa Maas in Crying of Lot 49 will sit up on a bluff overlooking San Narciso, and she'll look down at the pattern of light.
拍卖第四十九批》里的奥狄芭·马斯也会坐在悬崖上,俯看纳西索，看各式的光。
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So like right up north there's a City Light Bookstore,
从这里向北走有一家城市之光书店，
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What started as a family project has emerged as the Light Up the World Foundation, which has reached 25,000 people in 51 countries.
VOA: standard.2009.12.13
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And instead of having the electron giving off energy as a photon, instead now the electron is going to take in energy from light and move up to that higher level.
与电子以光子形式施放能量不同,我们现在要从光中,获得能量到一个更高的能级。
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He's also decided to give up leadership in Light up the World Foundation to start a company in India that will develop a more energy-efficient and cheaper lighting system that he hopes will bring even more light to the world's poor.
VOA: standard.2009.12.13
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Well, we can continue. On a light-up valentine it means "don't stop, go."
勇往直前吧“
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Now she used both hands, holding the stockings up to see the light shine through them.
VOA: special.2010.10.02
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How should one live, in light of the facts about death ? that I've been laying out in the semester up to this point?
一个人应该怎样活着，鉴于我这个学期一直讲到这刻的,关于死亡的事实？
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The light house man led Rudolf up the metal stairs.
VOA: special.2010.05.08
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Students would see my light on in my office and say, "Oh that's great Master Brownell, you stayed up all night just like we did working," but of course we were on different schedules.
学生看到我办公室的灯亮着就说,"伟大的布朗奈尔院长,你也和我们一样通宵工作呀",但显然,我们的作息表不一样
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I sat up. I could see light from an opening.
VOA: special.2010.07.31
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However, there are light arm troops made up of those too poor to be in the phalanx, who do use projectiles and the projectiles are arrows, javelins, or stones thrown by slings.
然而的确有轻装部队,由没法进入方阵的穷人组成,他们使用投掷武器,包括弓箭,投枪,或者绳索绑着的石头
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"We use some kind of light oil that we heat up and we actually work it into the oily feathers.
VOA: standard.2010.06.08
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What we had just done a clicker question on is discussing light as a particle and the photoelectric effect, so we're going to finish up with a few points about the photoelectric effect today.
我们刚才做得课堂表决器那个问题,是讨论光作为一个粒子以及光电效应，所以今天我们将以一些,关于光电效应的观点作为结束。
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"He ended up being the American Johann Strauss,Jr., the ultimate American composer of light, perfectly crafted orchestral music."
VOA: standard.2010.07.28
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And if we do, in fact, hit it with light to get the electrons off, it will go back to the straight up in position, or if it gets knocked hard enough it does that, too.
而且如果我们这么做，事实上，用光轰击它以逐出电子，它就会在原位置沿直线返回，或者如果它被撞击的足够猛烈,也会出现上述现象。
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But long before Fiedler picked up the baton, the Boston Pops had carved out a niche, bringing light orchestral music to wide audiences.
VOA: standard.2010.07.28
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I wonder if there's some UV light out of this new lighting set up in our classroom here.
好的，我想知道这里,我们教室里的这套新的照明装置,是否有一些紫外光出来。
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"By imposing a tax on every American who drives a car or flips on a light switch, this plan will drive up the prices for food, gasoline and electricity,".
VOA: standard.2009.06.27
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And we'll also talk about photon momentum as another example of light behaving up as a particle.
并且我们也会讨论光子动量的问题,这个可以作为光有粒子行为的例子。
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"Let's Shoot" "Light em all up" "Come on fire" (SHOOTING SOUND) In the incident, (SHOOTING SOUND) Wikileaks,the group that posted the video, has identified two of the men as a Reuters news photographer and his driver.
VOA: standard.2010.04.06
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So up to this point, before it was really established that yes, light is like a particle sometimes, there was this very strong distinction between what is light and what is matter.
所以关于这个观点，在它被真正确立之前，光有时候像粒子，在什么是光和什么是物质之间,有一个非常巨大的区别。
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But now, it has come to light that they are the ones that do get credit for first really coming up with this idea of a spin quantum number, and it's interesting to think about how the politics work in different discoveries, as well as the discoveries themselves.
但现在我们,知道他们是,最先想出自旋量子数,这个概念的人，看各种发现中的,政治学是十分有趣的，和发现本身一样有趣。
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Absorption is just the opposite of emission, so instead of starting at a high energy level and dropping down, when we absorb light we start low and we absorb energy to bring ourselves up to an n final that's higher.
吸收就是发射的逆过程,与从一个高能量到低能量不同，当吸收光时，我们从低能量开始,吸收能量到一个更高的能量。
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So what we end up with for the number of photons in this laser beam of light is 2.1 times 10 to the 17 photons.
这个激光束的数目是,2，1乘以10的17次方。
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If I went on and told you what the different incident light was, and what the electrons were ejected with, and then you could look up the ionization energy for the particular different elements, you should be able to actually determine exactly which element it is, but just with the information given, we can only narrow it down to these choices here.
如果我继续告诉大家入射光源是什么，出射电子的动能是多少，那么你可以去查一查,以上各个元素的电离能，这样你就应该能确定,这个元素到底是哪个，但是只凭题目中的信息，我们只能把范围缩小至以上几种元素。
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So that should mean that the energy that's transferred to the electron should be greater, but that's not what you saw at all, and what you saw is that if you kept the frequency constant there was absolutely no change in the kinetic energy of the electrons, no matter how high up you had the intensity of the light go.
所以这意味着转移到电子,上的能量也越大，但这并不是，我们观测到的现象,我们所看到的是,如果固定光的频率不变,不管光强如何变化,电子的动能没有任何变化。
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And I use the term photon here, and that's because he also concluded that light must be made up of these energy packets, and each packet has that h, that Planck's constant's worth of energy in it, so that's why you have to multiply Planck's constant times the frequency.
我这里用光子这个词,是因为他还总结出光,必须由这些能量包组成，每个能量,包有这个h，普朗克常数代表,里面的能量，所以这就是为什么你们,要用普朗克常数乘以频率。
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