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听力等级

科学研究   

2023-08-27   Video
Mapping the Darién Gap

Keywords:

SPEAKER 1: Among endangered tropical forests, this one is unique. This forest sits in the middle of the longest road on Earth, the Pan-American Highway, which runs from the tip of Alaska ...

演讲者1:濒临灭绝热带森林,这个是独一无二的。这片森林坐落在中间地球上最长的道路,泛美公路从阿拉斯加的顶端出发前往智利火地岛。森林被称为“Darién缺口”因为这是唯一的高速公路中断。在这个地区内达连国家公园。纵观历史,Darién的崎岖的...


2023-08-25   Intermediate
Daniel Shechtman's Discovery of Quasicrystals - Ⅱ

Keywords:

Normark: Do we have some more questions? I can assure you, we have talked to him and he was excited about getting this prize, and he said that he had perhaps dreamt about it but had given up the hope ...

诺玛克:我们还有其他问题吗?我可以向你保证,我们已经和他谈过了,他对获得这个奖项很兴奋,他说他可能梦想过这个奖项,但已经放弃了获得它的希望。所以我认为这是一个惊喜。也许,利丁教授可以说,在这一特殊发现之后,科学的不同状态是什么?李丁:当然。...


2023-08-24   British English
Capturing the Carbon Dioxide from Power Stations - Ⅱ

Keywords:

All of which is fine and dandy except that, if rigged to the average coal-fired power station, this process might use a quarter of the energy the plant produces. According to Howard Herzog, a chemical...

如果普通的烧煤发电厂使用这些被赋予美好愿望的先进技术,这个过程会消耗电厂产生的四分之一的能源。麻省理工学院的化学工程师霍华德·赫佐格研究过这个事情,他说这意味着每储存一吨碳的成本在50到100美元之间。有时候可以把二氧化碳卖给石油公司,他们...


2023-08-23   Intermediate
Daniel Shechtman's Discovery of Quasicrystals - Ⅰ

Keywords:

Professor Lars Thelander: I will give a brief introduction to the prize and hand over to Professor Lidin for a more detailed description. This year's Nobel Prize in chemistry awards one scient...

拉尔斯·泰兰德教授:我将简要介绍该奖项,并请利丁教授进行更详细的描述。今年的诺贝尔化学奖授予了一位科学家Daniel Shechtman。他对准晶的发现揭示了固体材料中原子和分子堆积的新原理。这导致了化学领域的范式转变。它还激发了对非常特殊...


2023-08-23   Video
1,000km Cable to the Stars - The Skyhook

Keywords:

Getting to space is hard. Right now, it’s like going up on a mountain on a unicycle- with a backpack full of explosives. Incredibly slow, you can’t transport a lot of stuff, and you might die...

进入太空很难。现在,这就像骑着独轮车上山-背着装满炸药的背包。太慢了,你不能运输很多东西,你可能会死。火箭需要达到每小时40000公里的速度才能逃离地球。为了达到这个速度,火箭大多是装有燃料的容器,有效载荷很小。如果你想去其他星球,这很糟糕...


2023-08-22   British English
Capturing the Carbon Dioxide from Power Stations - Ⅰ

Keywords:

Science and technology. Carbon capture and storage. A shiny new pipe dream. Capturing the carbon dioxide from power stations is not hard. But it is expensive. A new project in Norway aims to make i...

科技 碳的收集和储存 闪亮的管子 崭新的梦想 从发电站收集二氧化碳不难 但花费很高 挪威的一个新项目旨在降低碳捕捉的成本 五月七日挪威最受欢迎的歌手海伦·伯克斯勒在蒙斯塔德炼油厂引吭高歌,她身后的大幕缓缓打开。首相和其他政...


2023-08-21   Intermediate
The Accelerating Expansion of the Universe - Ⅲ

Keywords:

Karen: And today, what do you think is the reason, what is the mechanism for this? Schmidt: Well, I always looked to Einstein because Einstein didn't, he got a lot right, and so Eins...

凯伦:今天,你认为原因是什么,其机制是什么?施密特:好吧,我一直在寻找爱因斯坦,因为爱因斯坦没有,他做得很对,所以爱因斯坦的想法,从字面上看,本质上是一种能量——空间本身也有能量——这是宇宙加速的最简单原因。因为根据爱因斯坦的广义相对论方程...


2023-08-20   British English
Salt-tolerant Rice

Keywords:

Science and technology. Salt-tolerant rice. Nuclear-powered crops. Physics meets biology in a project to breed better strains of rice. Those who turn their noses up at "genetically modified" foo...

科技 耐盐大米 核动力粮食 物理学与生物学的碰撞--优质大米培植 对转基因食物不屑一顾的人似乎忽视了一个事实:所有粮食都属于转基因食物。野生植物与供人食用的植物之间的不同之处在于后者经过了层层筛选和培植,也就是经过多年的突变,将...


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