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听力等级

科学研究   

2025-01-16   Intermediate
Hydrogen - The Fuel That Could Power Your Next Flight

Keywords:

(upbeat funky music) - When this plane flies, the only emission that comes out of its tailpipe is the same thing that's in this glass, water. It's because this plane is powered by a hyd...

(欢快的时髦音乐) - 当这个飞机飞行时, 唯一 从它的排气管中出来 是同一回事 在这个玻璃杯里,是水。 因为这个时空是 由氢燃料电池提供动力。 现在,我将介绍如何操作 这在一秒钟内起作用, 但重...


2025-01-15   Pre-Intermediate
NASA Space Strike Might Have Reshaped an Asteroid

Keywords:

A new study suggests that an asteroid strike by an American spacecraft likely changed the shape of the targeted object. NASA crashed the DART spacecraft into the asteroid Dimorphos in 2022. The aster...

一项新的研究表明,美国航天器撞击小行星可能会改变目标物体的形状。 美国宇航局于 2022 年将 DART 航天器撞向小行星 Dimorphos。小行星撞击发生在距离地球约 1100 万公里的地方。 该实验测试了一种改变一些小行星轨道的方...


2025-01-14   Intermediate
How Noise-Canceling Headphones Create Silence in Microseconds

Keywords:

(sound waves vibrating) - [Narrator] Here's a sound wave. And here's its inverse. (sound wave beeping) Combine them and you have silence. (upbeat music) That's the basic idea behind n...

(声波振动) - [旁白] 这是声波。 这是它的反面。 (声波哔哔声) 将它们结合起来,你就会有沉默。 (欢快的音乐) 这是基本思想 在降噪耳机后面。 但这需要大量的技术 让它看起来 简单的科...


2025-01-13   Pre-Intermediate
Anxiety at 35,000 Feet

Keywords:

Some are asking whether personality tests could have prevented co-pilot Andreas Lubitz from crashing a Germanwings passenger airplane in the French Alps on March 24. But experts say many kinds of stre...

一些人质疑性格测试是否能阻止副驾驶安德烈亚斯·卢比茨 (Andreas Lubitz) 于 3 月 24 日在法国阿尔卑斯山坠毁一架德国之翼客机。但专家表示,航空公司飞行员工作中的多种压力都会导致他们的心理健康。 Andre Droog ...


2025-01-12   Video
What If All Stars Exploded at the Same Time

Keywords:

Hey, who turned out the stars? Hello? Seriously, where did they go? Is this the end of the Universe? Are we about to get all wiped out? This is WHAT IF, and here's what would happen if al...

嘿,谁把星星找出来了? 你好?说真的,他们去哪儿了? 这是宇宙的终结吗? 我们是不是要全军覆没了? 这是假设,如果宇宙中的所有恒星同时爆炸会发生什么。 从地球上可以看到的每一个星系,都有九个较小的星系,即使我们...


2025-01-10   Intermediate
The Impact of Two Weeks Exercise on Longevity

Keywords:

- Oh my God, I cannot do a pull up. Sometimes it's really hard to find time to work out, but decades of research shows that the stress that exercise puts on the body actually trains it t...

- 哦,天哪,我不能做引体向上。 有时这真的很困难 找时间锻炼, 但几十年的研究表明 那个 强调 锻炼 穿上身体 实际上训练它来防御 远离主要慢性病, 像糖尿病、癌症、 肥胖和心脏病。 来吧。 ...


2025-01-08   Intermediate
Apple’s iPhone Passcode Problem

Keywords:

I was outside a bar in New York City And my phone was stolen out from my hands. Within three minutes I was locked out of my own Apple ID And within 24 hours I noticed that there were thousan...

我当时在纽约市的一家酒吧外面 我的手机从我手里被偷走了。 不到三分钟,我自己的 Apple ID 就被锁定了 在 24 小时内,我注意到有数千美元从我的银行中取出 帐户。 最近人们一直在向我讲述这样的故事。 ...


2025-01-08   Video
What Would Happen If We Could Refreeze the Arctic

Keywords:

The Arctic might soon become completely ice-free. And when all of the ice is gone, the world won't be the same. But what if I told you there was a way to prevent this from happening? And that...

北极可能很快就会完全无冰。 当所有的冰都消失时,世界将变得不一样。 但是,如果我告诉你有办法防止这种情况发生呢? 我们可以通过对一些人造冰山进行地球工程来做到这一点? 这就是假设,如果我们能重新冻结北极会发生什么。 ...


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