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嘉兴换牙齿多少钱一颗中国助手

2019年09月19日 02:43:14 | 作者:光明专家 | 来源:新华社
TED演讲集 那些匪夷所思的新奇思想201509/400100Have you ever noticed that meat or vegetables or ice cream left too long in the freezer,develop a layer of frosty ice on their surface?And when eaten,theyre kind of dry and icky?This is freezer burn,and it happens because ice in the frozen food sublimates-that is,the water changes directly from a solid to a gas rather than first melting and then evaporating.你是否注意到过,当肉,蔬菜或冰淇淋在冰箱中长时间放置后,它的表面上会形成一层冰霜 这些食物吃起来口感有甘有粘?这就是冻灼 它是由冷冻食物中的冰升华造成的 也就是说,水分直接从固态变成气态 而非冰晶先融化成水后再蒸发。Unlike regular frost(also called;hoar frost;),which forms when water vapor thats aly in the air freezs into crystals on top of something cold,the frost in freezer burn comes from frozen water in the food itself.Thats why freezer burn happens less to flour and nuts than to vegetables and meat and ice cream,which contain more water,And the ultimate effect is that water is transferred from inside the food to outside the food,leaving it dry and frosty,but still safe to eat.Youre basically freeze-drying it,although the food might also oxidize and turn brown.和平常的霜(又名“白霜”)不同,白霜由空气中的水蒸气凝固成冰晶,附着在较冷物体表面 而冻灼中的霜 来源于食物中冻住的水 这就是冻灼在面粉或是坚果中发生 频率少于蔬菜,肉类和冰淇淋中,这些食物中所含水分更多,最终,食物中的水分从食物的内部转移到外表面,使得内部,又干又硬 但是还能吃,你仅仅是把它冻干了而已。虽然食物,也可能会氧化变黄。Of course,ice by itself can also sublimate,which is why ice cubes shrink in their trays over time,And the frost on the walls of a freezer comes partly from water that was once in ice cubes and food in the freezer.当然,冻本身也能升华 这就是为什么冰块在冰盒中也会渐渐缩小,冰箱内壁上的冰霜部分来源于曾经在 冰箱内冰块和食物中的水分。Sublimation happens more easily when the air is dry and when the ice is close to the melting point of water,so you can avoid having your food get freezer burn by keeping your freezer consistently cold and preventing air from contacting the food in it-for example,by sealing food in plastic freezer bags without any air pockets.当空气干燥,冰块温度临近熔点时,冰更易升华。因此,你可以以此防止食物发生冻灼 可以使冰箱内保持 较低温度 或防止食物和空气接触 比如 可以将食物 密封在没有空气囊的塑料食品袋中。Whats more,freezer burn ISNT just limited to freezers-it happens in nature,too.Forst-flowers on sea ice,for example,form when water vapor sublimates from warm ice into air too cold to hold it.Homeless,the vapor deposits back onto the surface as icy lilies-sublime sublimation.同时 冻灼并不只发生在冰箱里,自然界中也会发生 比如 海洋上的 冰花是因温度较高的冰块水蒸气升华 周围空气过冷 无法保持其 原先形态 无处可去的水蒸气聚集在冰表面形成冰百合---绝美的升华。201503/361980社交网络正把人与人之间的关系变得更为密切或更为疏远,TED演讲者们对网络革命的影响各抒己见。201504/367586

Follow me, sir.请随我来 先生Henry.亨利Andrew.安德鲁Good to see you, thank you for coming.很高兴见到你 谢谢你能来Its my pleasure.荣幸之至Please, sit.请坐Thank you.谢谢Whiskey, neat.威士忌 纯的Now, Henry, I believe youve married since I saw you last.亨利 上次见你之后 你好像结婚了Marriage changes a man, Andrew.婚姻能改变一个男人 安德鲁Oh. Hows that?怎么讲Well, lets say Ive calmed down a bit.我想我比原来冷静了一些Well, its a noble institution, as they say.据说是一次很高贵的结合I dont know about noble,but its an institution.高不高贵我不知道 反正是一次结合An institution nonetheless, right?反正是一次结合The partnership between Carnegie and Frick was analogous to the way a good business partnership works today.卡内基和弗里克之间的联手 和如今的良好商业合作关系很像You want somebody as completely opposite and different from you as you possibly can get.你要找一个完全和你不同 完全和你互补的人作为合作伙伴Fricks first assignment is to get Carnegie Steel into shape.弗里克的第一个任务是帮助卡内基钢铁公司增强实力His boss believes that Frick will use his toughness to cut costs and eliminate waste......leading to bigger profits.作为弗里克的老板 他相信弗里克能够使用他的冷酷无情 削减成本 避免浪费进而得到更大利润Many see giving Frick so much power as a huge risk.很多人认为给弗里克太多权力 风险太大But Carnegie decides its a risk worth taking.不过卡内基认为 这个风险值得冒Welcome aboard, Henry.欢迎加入 亨利Thank you, Andrew.谢谢 安德鲁In the end, hiring Frick may be the worst decision of Carnegies career.最后看来 招募弗里克可能是卡内基生涯中最糟糕的决定201604/434901

栏目简介:《英语学习入门视频》是英语视频听力下面的子栏目,栏目内容适合刚刚接触英语学习不久的童鞋学习。视频内容比较简单易懂,是入门英语知识的基础,有助于帮助英语学习爱好者逐步掌握基本的英语知识。201601/423292

Zoroastrians dont have that option, everywhere that is Zoroastrian has been conquered by Islam. And so as a result there is an increasing,sort of, spiral of decline to the degree that now in the land of its birth-in Iran-Zoroastrians are a tiny, tiny minority.;可琐罗亚斯特教徒没有这样的选择。他们曾经的国度全都被伊斯兰占领了。如今就算在琐罗斯特教的发源地伊朗,其教徒数量也为数不多。But if Zoroastrians today are relatively few in number, some of their faiths core teachings about the eternal conflict of good and evil, about the ending of the world, are still very powerful today. The politics of the Middle East are still haunted, and in some measure shaped, by belief in an eventual apocalypse and the triumph of justice-an idea that Judaism, Christianity and Islam all derived from Zoroastrianism. And when politicians in Teheran talk of the Great Satan, and politicians in Washington denounce the Empire of Evil, ones tempted to point out that: ;Thus Spake Zarathustra;.虽然教徒的数量不算多,但他们的一些核心教义,如世界的善恶之争,以及世界末日的观念,依然有巨大影响。如今中东依然政局不稳,末日启示和正义必胜等观念仍在某种程度上影响着政局。这些观念都源自琐罗亚斯特教,如今为犹太教、基督教与伊斯兰教共有。德黑兰政治家提到的“大撒旦”,华盛顿政治家所谴责的“邪恶帝国”,这些都是“查拉图騰拉如是说。”201506/380721

Hulks Smashing Special Effects: The Avengers 浩克了不起的特效:复仇者联盟Dr. Banner, your work is unparalleled, and Im a huge fan of the way you lose control and turn into an enormous green rage monster.Banner士,你的工作是无与伦比的,而且对于你失去控制变成一个巨大的绿色狂怒怪物的方法,我可是个大粉丝。Thanks.谢啦。One of the really successful design decisions in the beginning was to incorporate Mark into the Hulk. And there was a lot of debate back and forth on whether, you know, the Hulk should look like Mark, but I think having that semblance of Mark Ruffalo, having the eyes and the area on the face where you feel like you can see him in there really grounds the character in reality.一开始,把Mark融入浩克里面是其中一个非常成功的设计决策。而前前后后有很多的争论关于是否,你知道,浩克应该看起来像Mark,但我认为拥有Mark Ruffalo的外观,拥有眼睛和脸部范围,在那里你感觉像是你可以在那看到他真的把这角色建立在真实的基础上。Once the film was edited, and we knew exactly what the Hulk shots were gonna be, ugh, he came up here with Joss, and we set up cameras that represented...here is where the film camera was, and heres a bunch of witness cameras. And we gave him a space to work in and let him run through every performance on the film. We sort of did a rough calculation and figured out the Hulk is somewhere between eleven hundred and sixteen hundred pounds. And so, that kind of character, that kind of mass, is gonna react very differently than Mark does. And I think thats where using Marks performance and combining that with the incredible animation thats done here, thats where the artistry happens in the interpretation of how that performance needs to be augmented to become the Hulk.当影片被编辑过,而且我们完全知道浩克会往哪边出拳,他跟Joss出现在这边,而我们设立摄影机代表...这是主摄影机所在,而这里是一堆侧拍摄影机。而且我们给他一个在里面工作的空间并让他排练电影中每一个演出。我们有点像是做了一个粗约的计算并发现浩克大约在一千一百磅到一千六百磅之间。(约五百到七百二十五公斤)所以,那样的角色,那样的质量,将会表现得跟Mark所做的很不一样。而我认为那就是使用Mark的演出并和出自这里的不可思议的动画结合所在,也是诠释那表演需要如何被强化成为浩克的艺术效果发生之处。When hes unleashed, he can fly, you know, he can jump huge distances, he can smash things. We wanted to make sure that he was able to do all those things and still have sort of a human believable, you know, locomotion to him. The first layer is getting the animation nailed. Then on top of that we had a whole process of simulation. So theres a muscle and bone structure under his skin that preserves the volume as hes moving. On top of that theres a dynamics part of it, which is a simulation that happens once the animation is done. That gives you the kind of jiggly parts of it, and I think one of the great decisions on this Hulk, was that hes not...hes not super cut all the time.当他被释放出来,他可以飞行,你知道,他可以跳超远,他可以粉碎东西。我们想要确保他可以做所有那些事情并仍然有某种人们可以相信的,你知道,他的运行方式。第一层是固定动画。然后在那上面我们有一个完整的模拟过程。所以当他在移动的时候有肌肉和骨骼架构在他的皮肤下面维持体积。在那之上有个动态的部分,是个在一做完动画就产生的实境模拟。那给你它的某种不稳定部分,而且我认为其中一个对这浩克做的最棒的决定,是他不是...他不是永远都超级有线条。We then have a cloth simulation on top of that, which we typically use for shirts and pants, but it actually works really well when its constrained to give us all the little fine wrinkles in the skin. And on top of that, there was a very thin layer of ugh, skin simulation that we did, just to get that final level of ugh, movement to the skin that, you know, is so hard to re-create it.然后我们在那之上有一种布料模拟,我们一般是用在衬衫和长裤上,但当它被限制用来产生我们皮肤里面所有的微小细部皱纹,它实际上效果很好。而且在那之上,有一层非常薄的,我们做的皮肤模拟,只是为了达到那一个最高等级的,皮肤的动作。那个,你知道,是非常难重建的。Making sure that we were accurately getting...getting the performance that Joss was looking for, and also making him look real, that last fifteen percent ended up being a huge challenge for us.为了确保我们是很准确的做到...做到Joss所想要的演出,并也让他看起来真实,结果那最后的百分之十五变成我们的一个巨大挑战。Hulk! Smash!浩克!粉碎吧!201506/378925

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