欢迎您登陆
+ 影音搜索
 
 
<2025年7月>
周一周二周三周四周五周六周日
30123456
78910111213
14151617181920
21222324252627
28293031123
45678910
听力等级

科学研究   

2023-03-28   Intermediate
Could Time End -Ⅱ

Keywords:

Steve: Let me bring this up because it was an idea that I hadn't really thought about till maybe [five] or [six] years ago, and I think it leads you to a lot of strange places: A photon that ...

史蒂夫:让我来提一下,因为这是一个我直到五六年前才真正想过的想法,我认为它把你带到了很多奇怪的地方:一个在大爆炸时产生并一直在宇宙中飞行的光子,从未经历过任何时间的流逝。对于那个光子来说,它仍然是同一个创造时刻,因为根据定义,光子是以光速传...


2023-03-26   Intermediate
Could Time End -Ⅰ

Keywords:

Steve: First George, I have to congratulate you on the coinage, as far as I know, of a new word. I believe it would be pronounced "pre-bangian", although I am leaning toward "prabahngian". G...

史蒂夫:首先,乔治,据我所知,我必须祝贺你创造了一个新词。我相信它的发音会是“前班吉语”,尽管我更倾向于“普拉班吉语”。乔治:其实我喜欢后者;我不确定我真的是那个硬币的创造者。史蒂夫:你在其他地方见过——前支气管炎?乔治:那么,我可能在我写...


2023-03-26   Video
Decoded - How Do Vaccines Actually Work

Keywords:

Vaccines are medicines that train the body to defend itself against future disease. Unlike other drugs, which we give to some people when they’re sick, we give vaccines to huge numbers of people wh...

疫苗是训练身体防御未来疾病的药物。与我们在一些人生病时给他们服用的其他药物不同,我们在大量人健康时给他们接种疫苗。这就是疫苗经过如此广泛测试的原因之一。疫苗通过模拟体内的感染来发挥作用。这不是真正的感染,但它教会了免疫系统以后识别和中和类似...


2023-03-24   Intermediate
Let the Science Speak for Itself

Keywords:

Steve: We also recommend getting rid of bunker fuel, which I ha[d] never even heard of. Moyer: Bunker fuel is basically the nastiest stuff on Earth that we burn, and it's burn[ed] b...

史蒂夫:我们还建议取消燃油,我甚至从未听说过。莫耶:燃料舱燃料基本上是地球上我们燃烧的最肮脏的东西,它被公海上的货船燃烧。为了让你了解一下这些东西是什么:在美国销售的普通柴油、汽车汽油含硫量约为0.00015%——当然,硫是一种令人讨厌的东...


2023-03-22   Intermediate
The Autopilot

Keywords:

Moyer: Good riddance. Steve: Why don't we discuss a few these things like, for example, the space shuttle which is ending. We really think it deserves to end. Moyer: Yeah,...

莫耶:谢天谢地。史蒂夫:我们为什么不讨论一下这些事情,比如即将结束的航天飞机。我们真的认为它应该结束。莫耶:是的,通过我们的解谜部分,我们看到了很多人类发明,我们认为,你知道,他们的时代已经过去了。我们拥有的东西之一是航天飞机,当然,我们都...


2023-03-22   Video
The Deadliest Being on Planet Earth – The Bacteriophage

Keywords:

A war has been raging for billions of years, killing trillions every single day, while we don't even notice. The war is fought by the single deadliest entity on our planet: the bacteriophage ...

一场战争已经肆虐了数十亿年, 每天杀死数万亿人,而我们甚至没有注意到。 这场战争是由我们星球上最致命的单一实体进行的: 噬菌体 或简称“噬菌体”。 噬菌体是一种病毒; 不完全是活着的, 还没完全死去...


2023-03-19   Pre-Intermediate
You can Learn While You Sleep

Keywords:

In nineteen twenty-eight, a British scientist made a chance observation.He found that some mold had grown in bacteriain a culture plate in his laboratory.Molds can do that.But this mold that had someh...

1928年,一位英国科学家偶然进行了一次观察。他发现实验室培养板上的细菌中长出了一些霉菌。模具可以做到这一点。但这种不知怎么进入培养皿的霉菌有能力杀死周围的细菌。科学家亚历山大·弗莱明发现,这种霉菌属于一种常见的青霉属。弗莱明和另外两位科学...


2023-03-18   Video
Decoded - What Is a Virus

Keywords:

Viruses are tiny infectious agents that dominate much of the microscopic world. They’re incredibly abundant. There are more viruses in a single drop of seawater than there are people living in New ...

病毒是微小的传染源,主宰着微观世界的大部分。它们非常丰富。一滴海水中的病毒比纽约市的人口还多。地球上的病毒比宇宙中的恒星还多。他们有很多时间变得如此丰富。病毒早在我们之前就存在了。一些科学家认为它们比地球上任何生命都要古老。他们也非常多样化...


使用须知 常见问题  

Copyright© 2015-2025 kuotuo Inc. All rights reserved  

粤ICP备12056166号-3 粤公网安备 44010602002199号

您的IP地址:10.1.9.148