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教育学习   常速英语

2023-02-22   Video
Measure Mammal Extinctions at the John Day Fossil Beds

Keywords:

ANTHONY BARNOSKY: Species do not last forever. You can think of species a lot like you think of a human lifetime. They have a beginning and they have an end. SPEAKER 1: Anthony Barnosky...

ANTHONY BARNOSKY: 物种 不要永远持续下去。 您可以想到 物种很像你 想想人的一生。 他们有一个开始 他们有尽头。 演讲者 1: Anthony Barnosky 和凯特琳·马奎尔 是古...


2023-02-12   Video
Coral Bleaching Animation

Keywords:

Corals are small animals, but they build structures that you can actually see from space. And as we zoom in we see the reefs where I work on a little island called Ofu in American Samoa, ...

珊瑚 是小动物, 但他们构建的结构 你实际上可以从太空看到。 当我们放大时,我们会看到 我工作的珊瑚礁 在一个叫 Ofu 的小岛上 美属萨摩亚,那里的山脊, 边缘是珊瑚 礁石,当我们放大 我们看到那些...


2023-01-21   Video
Cancer and Cell Fate in the Intestinal Epithelium

Keywords:

There's a cross-section of that sort of tower, which is known as a villus. And the villus is lined by cells on the outside that are the fully differentiated cells that play an important...

有一个横截面 那种塔, 这被称为绒毛。 绒毛内衬有 外面的单元格 是完全的 分化细胞 在 随时随地吸收营养 你吃。 那些完全 分化细胞来了 来自无差别 干细胞 位于底部的, 那支...


2023-01-13   Video
Animated Life - Seeing the Invisible

Keywords:

Everything that you can actually see with your eye is just the smallest sliver of life on this Earth. Most of life is invisible. We still have this idea that we're the most central ...

万事 你实际上可以 用你的眼睛看 只是最小的 地球上的生命碎片。 生命的大部分都是看不见的。 我们仍然有这个 我们是 最中心的 地球特征 / 而是人类 他们是旁观者。 微生物正在做这项工作...


2023-01-05   Video
DNA Sequence Technology Improves Cancer Treatment

Keywords:

DNA sequencing technology has been revolutionized in the last several years, not only in the price-- it's no longer cost prohibitive to dream of any kind of sequencing project--but also the depth at w...

DNA 测序技术在过去几年中发生了翻天覆地的变化,不仅体现在价格上——梦想任何类型的测序项目都不再是成本高昂的问题——而且在测序的深度上也是如此。 现在可以对 对于基因的特定区域 您感兴趣的 in,对 叫一百万 fo...


2022-12-26   Video
Reproductive Isolation and Speciation in Lizards

Keywords:

SPEAKER 1: Two groups of animals are defined as different species when individuals from one group don't mate and reproduce with those from the other. One way a species can split into two is for pop...

演讲者1:当一组动物中的个体不与另一组动物交配和繁殖时,两组动物被定义为不同的物种。一个物种可以一分为二的一种方式是种群在地理上分开。经过几代人的努力,他们可以经历足够的变化在各自的栖息地,如果和何时他们一起回来了再说一次,它们不交配。演讲...


2022-12-22   Video
Mechanism of a Medication for Chronic Myeloid Leukemia

Keywords:

[SAWYERS:] BCR-ABL is a kinase. I want you to watch it change. It's flipping back and forth from an active to an inactive conformation. Now, we're looking at the skeleton and you see that lo...

[锯木厂:]BCR-ABL是一种激酶。我想让你看着它改变。它从活跃的构象来回翻转到非活跃的构象。现在,我们观察骨架,你会看到一个循环,它被称为激活循环,来回移动。那么,这是什么?嗯,这恰好是一个被称为激酶的蛋白质。激酶具有去除磷酸盐作业从一...


2022-12-14   Video
The Life of Alfred Russel Wallace

Keywords:

ANDREW BERRY: Evolution by natural selection. This is an idea that has been sought after since the dawn of human thought. And it was a theory that was discovered by two people, and we've...

安德鲁·贝里:自然选择的进化。这是一个想法自拂晓起便备受追捧人类思想。这是一个理论由两人发现,我们玩得很开心忘记了其中一个。到底发生了什么事可怜的老阿尔弗雷德·拉塞尔·华莱士?乔治·贝卡洛尼:阿尔弗雷德·拉塞尔·华莱士生于1823年在一间小...


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