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听力等级

科学研究   

2021-11-23   Video
How a Salmonella Infection Begins

Keywords:

Nice motile salmonella screaming along here *sound effects of airplane* here she comes! Boom! Ok it’s got a type 3 secretion system, squirts in proteins, triggers major event -here she comes, and *gul...

漂亮的活动沙门氏菌在这里尖叫 *飞机的声音效果* 她来了!繁荣!好吧,它有一个 3 型分泌系统,喷入蛋白质,触发重大事件 - 她来了,然后*吞咽* 啊,满意吧?还没有教这些视频如何打嗝。好的,细菌在里面,这里有一个液泡进来,这是 Chris...


2021-11-19   Video
Kidney Function

Keywords:

The kidney filters an enormous amount of plasma, and in so doing, it has become the central site for the regulation of the ionic composition of the body. All of the ions such as sodium, potassi...

肾脏过滤器 大量的血浆, 在这样做的过程中,它 成为中心站点 为了监管 身体的离子组成。 所有的离子,如钠、 钾、氯化物、氢、 磷酸盐、钙、 等等 在其 肾脏重吸收。 现在尝试让我们 一些想法 肾脏在做什么,我会...


2021-11-18   British English
The Science of Justice

Keywords:

Science and Technology 【The science of justice】 I think it's time we broke for lunch… 【Court rulings depend partly on when the judge last had a snack】 AROUND the world, courthouses are adorned w...

科技 司法的学问 该吃午餐了 法庭判决结果一定程度上取决于法官上一次吃点心的时间 世界各地的法院都装饰有一尊女子的雕像,这个女人被蒙住双眼,手持一架天平和一把剑。她是正义的化身。剑代表着法庭的权力,而天平代表着上诉人...


2021-11-18   Pre-Intermediate
Trusting Your Memory

Keywords:

Paul Doherty is a writer from the United States. He describes a memory for us. “I, my friend Martin, and a small group were climbing in the mountains. We climbed with two ropes. Martin and I climbe...

保罗·多尔蒂 (Paul Doherty) 是一位来自美国的作家。他为我们描述了一段回忆。 “我、我的朋友 Martin 和一小群人正在山上爬山。我们用两根绳子攀爬。马丁和我用第一根绳子攀登。我们已经到达了山的最高点。我们可以看到一场...


2021-11-17   Intermediate
Early Universe

Keywords:

Steve: In your article, you mentioned Steven Weinberg's famous book, The First Three Minutes and how back when he wrote that in—I think, it was in 1977? Zajc: That's correct. Steve: He said that he ...

Steve:在你的文章中,你提到了 Steven Weinberg 的名着《前三分钟》(The First Three Minutes),他写这本书的时候是怎么回事——我想是在 1977 年? Zajc:没错。 Steve:他说他无法深...


2021-11-17   Video
Recombination of Viral Genomes

Keywords:

Let's talk about what goes on at the single cell level. How does a gene for influenza hemagglutinin get into a human virus? And I've prepared a small video to show you how this goes. Before we roll th...

让我们谈谈单细胞级别发生的事情。流感血凝素基因是如何进入人类病毒的?我准备了一个小视频来向您展示这是如何进行的。在我们开始之前,让我先向大家介绍一下,我将在这里向大家介绍两种流感毒株。其中一个具有红色的基因组片段,另一个具有蓝色的基因组片段...


2021-11-15   Intermediate
The Tribal Mind

Keywords:

Steve: Dr. Romm, thanks for being with us today. Romm: My pleasure. Steve: I was with the[a] group of people a few days ago and the subject of hybrid cars came up; and somebody there started talking...

Steve:Romm 医生,感谢您今天接受我们的采访。 Romm:我的荣幸。 Steve:几天前我和一群人在一起,谈到了混合动力汽车的话题;那里有人开始谈论一个事实——我认为这是相当普遍的知识——如果你今天买了一辆混合动力车,你真的必须...


2021-11-15   Video
Viral Life Cycle

Keywords:

Here's the virus particle with its envelope and proteins and genome. And you're going to see this represented as being within a pipette that's going to be dropped onto a petri dish containing human ce...

这是病毒颗粒及其包膜、蛋白质和基因组。您将看到它被表示为在移液器中,该移液管将被投放到含有易受感染的人类细胞的培养皿中。下面是单个单元格的爆炸。留意这里,这些是细胞表面受体,这是要结合的病毒部分,这是拆卸阶段。在这种情况下,基因组会进入细胞...


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