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听力等级

科学研究   

2024-03-08   Video
What Would Happen If Earth Suddenly Lost Its Atmosphere

Keywords:

What if we lost our entire atmosphere all at once? Let's say, the Earth's magnetic field took a break and allowed strong solar winds to come and strip away our protective space-blanket. This...

如果我们一下子失去了整个大气层怎么办?假设地球的磁场中断了并允许强太阳风来临剥掉我们的保护性太空毯。 这是 What if以下是将要发生的事情如果我们的大气层消失得稀薄无暇。 究竟有多重要大气层到我们的星球?这绝对至关重要。 它保护我们免受...


2024-03-07   Pre-Intermediate
The Importance of Early Contact with Languages - Ⅰ

Keywords:

Not long ago,many people believed that babies only wanted foodand to be kept warm and dry.Some people thought babies were not able to learn things until they were five or six months old.But doctors in...

不久前,许多人认为婴儿只想要食物和保持温暖干燥。 有些人认为婴儿直到五六个月大才能学习东西。 但美国的医生现在说,婴儿在出生后的第一天就开始学习。 Eunice Kennedy Shriver 国家儿童健康与人类发展研究所是一个联邦政府机构...


2024-03-06   Intermediate
A True Crime Story and the Birth of Forensic Science - Ⅳ

Keywords:

Douglas Starr: In a blue pencil, he started circling similar descriptive pieces, and he came up with this description. And it went out, and time went by. And eventually, among his many, many ass...

道格拉斯·斯塔尔:他用一支蓝色铅笔开始画出类似的描述性作品,然后他想出了这个描述。 它出去了,时间流逝了。 最终,在他许许多多的袭击中,瓦切尔袭击了一名在一个名为 Ardeche 的地方收集栗子的妇女,她的丈夫就在附近。 他来了,他铲倒了瓦...


2024-03-06   Video
What Would Happen If Everyone Turned off Their Lights at the Same Time

Keywords:

Ah! The good old days before electricity. Did we actually have it better before the first power plant started running? What if everyone on Earth tried getting by with all their lights turned off...

啊!电力供应之前的美好时光。 在第一座发电厂开始运行之前,我们真的做得更好吗?如果地球上的每个人都尝试关掉所有的灯来过日子呢?我们将开始挑战完美的地球一小时,六十分钟完全黑暗,不允许人造光。 我们能否将光污染减少到足以能够在夜空中看到银河系...


2024-03-04   Intermediate
A True Crime Story and the Birth of Forensic Science - Ⅲ

Keywords:

Douglas Starr: So a person would come in and they would take these 11 measurements, and thee Bertillon numbers would be put on a card which would follow this person for the rest of his life. Now ...

Douglas Starr:所以一个人进来,他们会测量这 11 次测量,然后你的 Bertillon 数字会被放在一张卡片上,这个卡片将伴随这个人的余生。 现在有趣的是,这不仅是一个积极的 ID,而且通过使用电报,你可以以光速将某人的 Be...


2024-03-04   Video
How We Know Volcanoes are NOT the Source of Rising CO2

Keywords:

Let's consider this question about the source of carbon dioxide. So we know carbon dioxide levels are rising--even the climate contrarians, skeptics, and deniers, everyone agrees with that. ...

让我们考虑一下关于源二氧化碳。 所以我们知道二氧化碳水平正在上升——甚至气候反对者、怀疑论者和否认者,每个人都同意这一点。 但你可以争论,事实上他们中的一些人要争辩说,二氧化碳不会来燃烧化石燃料和土地变化使用,即二氧化碳的来源火山。 我们能...


2024-03-02   Intermediate
A True Crime Story and the Birth of Forensic Science - Ⅱ

Keywords:

Douglas Starr: Lacassagne wrote a manuscript on the case, and even looking at the line drawings was disgusting. The crime scenes were so horrific that sometimes they would traumatize the entire v...

道格拉斯·斯塔尔:拉卡萨涅写了一份关于这个案子的手稿,连看线条图都让人恶心。 犯罪现场是如此可怕,有时它们会给整个村庄带来创伤。 整个村子都会有创伤后应激障碍,有点发疯。 这太可怕了。 Steven Berkowitz:这本书真正让我印象深...


2024-03-02   Video
Is Civilization on the Brink of Collapse

Keywords:

At its height, the Roman Empire was home to about 30% of the world’s population, and in many ways it was the pinnacle of human advancement. Its citizens enjoyed the benefits of central heatin...

在鼎盛时期,罗马帝国是大约占世界人口的 30%,并且在许多方面它是人类进步的巅峰。 其公民享受了中央供暖的好处,混凝土, 双层玻璃,银行、国际贸易、以及向上的社会流动性。 罗马成为拥有 100 万居民的历史并且是技术中心,法律和经济进步。 ...


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