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听力等级

教育学习   

2022-06-29   Intermediate
About E. Coli – Part II

Keywords:

Zimmer: Another thing about E. coli is that to understand what it means for it to be alive is to understand how it's alive with other E. coli. For a long time, scientists just thought about E. coli ju...

Zimmer:关于大肠杆菌的另一件事是,要了解它活着意味着什么,就要了解它是如何与其他大肠杆菌一起活着的。很长一段时间,科学家们只是把大肠杆菌看作是一个小小的化工厂。你只需喂它,它就会生长和复制,然后它就会生长和复制,然后你看看它用来做这一...


2022-06-29   Video
Creating Embryonic Stem Cell Lines

Keywords:

The inner cell mass cells, which are going to be removed and grown in a Petri dish. We first remove the outer layer that would normally form the placenta. Here the cells are put into a...

内部 细胞团 / 哪些将被删除 并在培养皿中生长。 我们首先去掉外部的 层,该层通常会 形成胎盘。 以下是单元格 放入培养皿中。 通常有鼠标 初期玻璃纤维 在 it 的底部设置为 帮助细胞生长...


2022-06-27   Intermediate
About E. Coli – Part Ⅰ

Keywords:

Steve: E. coli is obviously fascinating we have, what did you say, we have about a billion of them in our bodies at any one time? But what the zest [possessed] you would [to] actually spend, however m...

Steve:大肠杆菌显然很迷人,你说什么,我们体内任何时候都有大约 10 亿个大肠杆菌?但是,无论你花了多少年时间,在大肠杆菌上写出多少字,你实际上会花多少热情呢? Zimmer:嗯,我记得有人带着一些担忧问我这个问题,答案很简单。我一直...


2022-06-25   Video
Differentiation and the Fate of Cells

Keywords:

Here we're going to go through quickly the early stages of development again. And then we're going to get to this stage when the germ layers are set aside. The three germ layers, the ...

我们来了 要通过 快速进入早期阶段 的再次发展。 然后我们就要走了 进入此阶段 当胚芽分层时 被搁置一旁。 三个胚层, 外胚层、中胚层、 和内胚层。 所以在这里你会看到 内部细胞团产生 ...


2022-06-24   British English
Electronic Education

Keywords:

Electronic education. Flipping the classroom. Hopes that the internet can improve teaching may at last be bearing fruit. THE 12-year-olds filing into Courtney Cadwell’s classroom at Egan Junior H...

电子教学 跃然于教室间 但愿互联网可以改善教学的希望终能修成正果 Egan初中坐落于硅谷郊外郁郁葱葱的洛斯拉图斯,那里12岁的孩子们选了考特尼·卡德威尔老师的课程,他们每个人都从手推车里拿一部白色笔记本电脑,然后登陆到网站...


2022-06-21   Intermediate
Searching for Intelligence

Keywords:

Steve: What, really, is intelligence? Zimmer: Well there are a lot of different ways of testing intelligence, and you can find them on IQ tests and other kinds of tests; and they tend to correlate to...

Steve:智能到底是什么? Zimmer:嗯,有很多不同的方法来测试智力,你可以在智商测试和其他类型的测试中找到它们;它们往往相互关联,因此在一项智力测试中得分相同的人在另一项测试中也会进行类似的测试,因此这些分数在某种程度上是联系在一...


2022-06-21   Video
Zebrafish Heart Regeneration

Keywords:

Zebrafish, which any of you who are fish fanciers keep in the fish tank, can get to be about two inches long. It's got a little heart with just two chambers one atrium and one ventricle an...

斑马鱼,你们中的任何一个 养鱼的人是谁 在鱼缸里,可以得到 大约两英寸长。 它有一颗小小的心 只有两个腔室,一个中庭 和一个心室和那个泵 血液遍布全身 鳃 等效的 鱼的肺。 心脏肌肉发达 就像...


2022-06-17   Intermediate
The Large Hadron Collider

Keywords:

Steve: Dr. Wilczek—thanks very much for talking to me today. Wilczek: My pleasure. Steve: Let's get to the most important thing for us. How is your opera career going? Wilczek: (laughs) My opera ca...

Steve:Wilczek 医生——非常感谢您今天接受我的采访。 Wilczek:我的荣幸。 Steve:让我们来谈谈对我们来说最重要的事情。你的歌剧生涯进展如何? 维尔切克:(笑)我认为我的歌剧生涯已经进入了理想的领域。 Stev...


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