欢迎您登陆
+ 影音搜索
 
 
<2026年6月>
周一周二周三周四周五周六周日
25262728293031
1234567
891011121314
15161718192021
22232425262728
293012345
听力等级

科学研究   常速英语

2025-08-02   Video
New Paper-based Test Can Determine Blood Type in Seconds

Keywords:

You probably know your blood type -- A? B? Universal donor? You might even carry a card on you so that in case of emergency, you won’t get the wrong type of blood. But do you know how your blood...

你可能知道你的血型——A?B?通用捐赠者?您甚至可能会随身携带一张卡以便在紧急情况下,你不会得到错误类型的血液。 但是你知道你的血型如何吗实际上是一开始就确定的?血型可以通过两种方式确定:检测标志物的正向血型在血细胞本身上,并反向血型,检测...


2025-07-31   Video
A Tubular, Shape-shifting Robot

Keywords:

Researchers have developed a plant-like soft robot that acts like a tendril, lengthening its body to move through its environment. They took their inspiration directly from nature, observing move...

研究人员开发出一种类似植物的软体机器人就像卷须一样,延长其身体以在环境中移动。 他们的灵感直接来自自然界观察真菌菌丝的运动模式,大脑神经元和花粉管。 这些生物体在它们的环境中航行不是通过运动,而是通过顶端伸展——通过身体的尖端生长。 通过控...


2025-07-27   Video
Giant Blubbery Elephant Seals Recognize Their Enemies' Rhythms

Keywords:

Male northern elephant seals know who their rivals are on the beach. They don’t even have to see the other guy. They remember his voice and the rhythm in his call. Humans do the same thing when ...

雄性北象海豹知道他们的对手是谁在海滩上。 他们甚至不必见到另一个人。 他们记得他的声音以及他通话的节奏。 人类也做同样的事情当我们倾听别人的声音时。 这就是我们如何为声音命名,即使没有见到人对于象海豹,学习和记住其他男性的叫声是生存问题。 ...


2025-07-25   Video
Scientists Warn of Sleepless Nights in a Warming World

Keywords:

If you’ve ever found yourself tossing and turning on a sweltering summer night, then you know how crucial a role temperature plays in a good night’s sleep. Under normal conditions, our body’s core...

如果你曾经发现自己辗转反侧在一个闷热的夏夜,然后你就会知道温度的作用有多么重要睡个好觉。 正常情况下,我们身体的核心温度从 98。 9 度下降到 97。 7 度就在我们即将入睡的时候。 整夜保持低位,并在我们醒来之前再次升起。 但当环境温度...


2025-07-23   Video
Cats Rival Dogs on Many Tests of Social Smarts

Keywords:

I have two cats at home. They’re mostly wonderful, except for when they’re terrible. I think most cat owners know that their cats are smart and affectionate our cat Jasper, when I'm out...

我家里有两只猫。 他们大多很棒,除非他们很糟糕。 我想大多数猫主人都知道他们的猫聪明而深情我们的猫 Jasper,当我和他一起在外面时,他会看着我,他会看着那堵墙,他会回头看着我,如果我弯下腰,他跳到我的背上,他也跳到墙上。 所以就有了这个...


2025-07-21   Video
Astronomers Measure the Mass of a Star

Keywords:

A new observation of the bending of distant starlight by gravity has allowed researchers to weigh a white dwarf star, virtually impossible before now for an isolated star. One of the key predictio...

对遥远星光弯曲的新观察通过重力,研究人员称量一颗白矮星,在此之前,对于一颗孤立的恒星来说,这几乎是不可能的。 爱因斯坦的关键预测之一广义相对论是大质量物体附近的空间曲率,比如星星,导致一束光从附近经过偏转量的两倍这是意料之中的。 所以当一颗...


2025-07-19   Video
Dark Asteroids Reveal Secrets of the Early Solar System

Keywords:

The main asteroid belt between Mars and Jupiter is home to millions of meteoroids. But how did these objects form in the first place? Astronomers have two ideas. One thought is that asteroid ance...

火星和木星之间的主要小行星带是数百万颗流星体的家园。 但是这些物体在第一个地方?天文学家有两个想法。 一种想法是,小行星的祖先,也是被称为 Planetesimals,通过逐渐吸积,抓取越来越多材料随时间的变化,就像雪球从山上滚下来。 另一...


2025-07-15   Video
How Fast is the Universe Expanding

Keywords:

Ever since Edwin Hubble discovered that the universe is expanding, there has been a great debate about the speed of this expansion, also called The Hubble constant. In 2000, scientists thought th...

自从埃德温·哈勃 (Edwin Hubble) 发现宇宙在膨胀,有一场激烈的辩论关于这次扩张的速度,也称为哈勃常数。 2000 年,科学家们认为他们已经达到了共识:哈勃常数约为 72。 但从那时起,有两种计算方法扩张速度变得更远而且距离更远...


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:10.1.1.142