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听力等级

科学研究   

2023-09-16   Video
What Do Alien Civilizations Look Like

Keywords:

An observable universe is a big place that's been around for more than 13 billion years. Up to two trillion galaxies made up of something like 20,000 billion billion stars surround our home ga...

可观测的宇宙是一个很大的地方 这已经存在了 130 多亿年。 多达 2 万亿个星系由 大约 200000 亿颗恒星 围绕着我们的家园星系。 仅在银河系中, 科学家们假设有一些 400 亿颗类地行星 在他们...


2023-09-14   Video
Biology of SARS-CoV-2 - Evolution

Keywords:

SPEAKER 1: The SARS-CoV-2 genome is a single strain of RNA with genes that encode fewer than 30 proteins. This is less than 0.1% of the proteins encoded by the human genome. The viru...

发言者 1: SARS-CoV-2 基因组是 单个菌株 RNA 的基因 编码少于 30 种蛋白质。 这小于 0.1% 的蛋白质 由人类基因组编码。 该病毒的基因组是 由大约 30,000 个 称为...


2023-09-13   Pre-Intermediate
How Babies Learn, When, and Even In What Position, Part Two

Keywords:

The World Health Organization says iron deficiency is the most-common micronutrient disorder worldwide. WHO officials also say iron deficiency is a leading cause of anemia. About two billion people su...

世界卫生组织表示,缺铁是全球最常见的微量营养素紊乱。世界卫生组织官员还说,铁缺乏是贫血的主要原因。大约有20亿人患有这种疾病,据信40%的学龄前儿童贫血。20%的孕产妇死亡与低铁水平有关。关于低出生体重婴儿的报告发表在《儿科学》杂志上。专家...


2023-09-11   Pre-Intermediate
How Babies Learn, When, and Even In What Position, Part One

Keywords:

Not long ago, many people believed that babies only wanted food and to be kept warm and dry. Some people thought babies were not able to learn things until they were five or six months old. But doctor...

不久前,许多人认为婴儿只想要食物,需要保持温暖干燥。有些人认为婴儿要到五六个月大才能学会东西。但美国的医生现在说,婴儿在出生的第一天就开始学习,甚至在出生前。尤妮斯·肯尼迪·施莱弗国家儿童健康与人类发展研究所是一个联邦政府机构。该研究所表示...


2023-09-10   Intermediate
Health and Nutrition Research at Mars, Part Three

Keywords:

Schroeter: In a certain way that was important that we did this in the beginning of this research in order to start somewhere. But today we need to understand that concept only takes us so fa...

Schroeter:在某种程度上,我们在这项研究开始时这样做很重要,以便从某个地方开始。但今天我们需要明白,这个概念只能带我们走到这一步,如果它的目标是改变饮食指南或制造以科学和证据为基础的产品,为人们提供真正的益处、健康益处,我们需要的不...


2023-09-08   Intermediate
Health and Nutrition Research at Mars, Part Two

Keywords:

Schroeter: So, if we talk about flavonols in general, we need to be very specific because in the end, the devil lies in the detail, and we need to know what are the detailed biomedical proper...

Schroeter:所以,如果我们一般地谈论黄酮醇,我们需要非常具体,因为最终,魔鬼在于细节,我们需要知道这些化合物的详细生物医学特性是什么,以便提出饮食建议,以塑造食品加工方法,从而真正创造出有足够证据和真正科学的产品,以证明其益处的健康...


2023-09-08   Video
Solar Flares & Coronal Mass Ejections

Keywords:

The Sun, smooth and round and peaceful. Except when it suddenly vomits radiation and plasma in random directions. These solar flares and coronal mass ejections, or CMEs, can hit Earth an...

太阳, 光滑、圆润、宁静。 除非它突然吐出辐射 和随机方向的等离子体。 这些太阳耀斑和日冕 大量喷射 (CME) 可以撞击地球并具有严重的 对人类的后果。 它们究竟是如何工作的? 他们能有多糟糕? ...


2023-09-06   Intermediate
Health and Nutrition Research at Mars, Part One

Keywords:

Schroeter: When we talk about diets that are rich in plant foods or diets that are rich in vegetables are good for you, the question then is, Why? Steve: That's Hagen Schroeter. He's...

Schroeter:当我们谈论富含植物性食物的饮食或富含蔬菜的饮食对你有好处时,问题是,为什么? Steve:我是 Hagen Schroeter。他是玛氏公司 (Mars Incorporated) 的基础健康和营养研究主任。去年夏天,...


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