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听力等级

科学研究   

2023-08-19   Intermediate
The Accelerating Expansion of the Universe - Ⅱ

Keywords:

Botner: So what was the discovery? Well, by comparing the brightness of distant, faraway supernovae with the brightness of nearby supernovae, the scientists discovered that the faraway supern...

波特纳:那么发现了什么?通过比较遥远超新星和附近超新星的亮度,科学家们发现,遥远的超新星大约有25%太暗了——它们太远了。宇宙并没有像预期的那样减速;它正在加速。是什么让宇宙加速?好吧,实际上我们不知道。这是一个热门的研究课题,最热门的候选...


2023-08-19   Video
Has the Black Hole Information Paradox Finally Been Solved

Keywords:

Black holes have been a big problem in physics. For decades, scientists have been mystified about what happens to stuff that falls into a black hole. The quandary is called the black...

黑洞是一个巨大的物理学中的问题。几十年来,科学家们一直感到困惑关于东西会发生什么落入黑洞。这种困境被称为黑洞信息悖论,它让物理学停滞不前。但近年来,科学家们取得了突破这可能最终会解决这个难题并开始展示黑洞是如何工作的。为了理解这个悖论,我们...


2023-08-17   Intermediate
The Accelerating Expansion of the Universe - Ⅰ

Keywords:

Johansson: This discovery of the accelerating expansion of the universe is a milestone for cosmology. The expansion history of the universe gives us insights into the evolution of the universe...

约翰逊:宇宙加速膨胀的这一发现是宇宙学的一个里程碑。宇宙的膨胀历史让我们了解了宇宙的演化,也可能了解了宇宙最终的命运。宇宙的膨胀早在20世纪20年代就被发现了。膨胀率取决于能量含量。一个只包含物质的宇宙,最终会因为引力而减速。每个人都期望宇...


2023-08-16   British English
Science & Technology - The Climate may not be Sensitive to Carbon Dioxide

Keywords:

Science and technology. Climate change. Good news at last? The climate may not be as sensitive to carbon dioxide as previously believed. Climate science is famously complicated, but one useful n...

科技 气候变化 终于来了好消息? 气候对二氧化碳的敏感性可能低于先前的预期 气候科学的复杂程度众所周知,但把一个指标记在脑中非常好用,那就是"气候敏感性"。该指标表示预计大气中二氧化碳浓度翻倍所能引致的升温量。政府间气候变...


2023-08-15   Intermediate
The Battle to Eradicate What's Called Guinea Worm, Part Two

Keywords:

Steve: I would imagine you also get a cascade of positive health benefits by having the sanitary conditions installed. Is there any evidence that they've also improved other conditions ther...

Steve:我想,通过安装卫生条件,您也会获得一连串的积极健康益处。是否有任何证据表明他们也改善了那里的其他条件? Gorman:嗯,是的,有大量证据表明,通过建造厕所,你可以产生其他积极影响。但是很多人不会想到的是,拥有厕所的惊人能力,...


2023-08-15   Video
Neutron Stars – The Most Extreme Things that are not Black Holes

Keywords:

Neutron stars are one of the most extreme and violent things in the universe. Giant atomic nuclei, only a few kilometers in diameter, but as massive as stars. And they owe their existence to ...

中子星是宇宙中最极端、最猛烈的东西之一。巨大的原子核,直径只有几公里,但质量和恒星一样大。他们的存在归功于某种雄伟事物的死亡。[引言音乐]恒星的存在是因为脆弱的平衡。数百万至数万亿吨热等离子体的质量被重力向内拉动,用如此大的力将物质挤压在一...


2023-08-13   Intermediate
The Battle to Eradicate What's Called Guinea Worm, Part One

Keywords:

Gorman: Of course, you know, prime stomping grounds for the Carters—the Carter Center is there. And it was very interesting because I hadn't really thought very much about the Carters, well, in a ...

Gorman:当然,你知道,卡特中心就在那里。这非常有趣,因为我已经很久没有真正考虑过卡特夫妇了。我很惊讶,也很惊喜,只是听到他们谈论全球健康问题的方式,这当然是吉米·卡特 (Jimmy Carter) 的重点,罗莎琳·卡特 (Rosaly...


2023-08-12   British English
Be Nice to Mice And They may Return the Favour

Keywords:

Science and technology. Animal testing. Be nice to mice. And they may return the favour. Only one drug of every ten successfully tested in laboratory animals ends up working in people. One reaso...

科技 动物实验 善待小鼠 它们可能会知恩图报 用实验动物试验成功的药物最终只有十分之一对人体起效。原因之一当然是:老鼠毕竟不是人。但另一个原因可能是,患病的实验动物无法像人类患者一样能够得到方方面面的呵护。 虽然老鼠这种医...


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