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听力等级

科学研究   

2023-07-06   Video
Is Meat Unhealthy

Keywords:

When our vegetarian ancestors started eating meat around two million years ago, it wasn't just because animals taste great, it was pure necessity. Climate change made many of the plants our ...

当我们的素食祖先开始吃素时 吃肉大约两百万年前, 这不仅仅是因为动物的味道很好, 这纯粹是必要的。 气候变化使许多植物成为我们的祖先 依赖较少的可用产品,而肉类弥合了这一差距。 最迟从发现火灾开始, 肉类成为人...


2023-07-04   Video
How Flow Rates Affect Biomass

Keywords:

MARY POWER: I've always had a deep wonder and fascination about the natural world. And I'm especially intrigued with how species interact with each other and also with their environments. My sci...

玛丽·鲍尔:我一直对自然世界充满好奇和迷恋。 我对物种之间以及它们与环境之间的互动特别感兴趣。 我的科学研究重点是河流及其包含的食物网。 河流是极其动态的栖息地。 它们会随着流经它们的水量而随着季节和年份的变化而发生...


2023-07-02   Intermediate
Inside the Meat Lab - The Case for Artificial Meat - Ⅱ

Keywords:

Steve: Let's talk about bulking up because, you know, when you're trying to make meat out in the real world, I mean, if you're trying to make meat, if you're trying to grow your own muscles, ...

Steve:我们来谈谈增肌,因为,你知道,当你在现实世界中试图制作肉类时,我的意思是,如果你试图制作肉类,如果你想锻炼自己的肌肉,你就要锻炼。你可以跑步,可以举重,但如果培养皿里有这堆细胞,你如何让这堆细胞生长,就像它以某种方式进行运动一样...


2023-06-30   Intermediate
Inside the Meat Lab - The Case for Artificial Meat - Ⅰ

Keywords:

Steve: Let's begin with this Willem van Eelen fellow. Why don't you tell everybody a little bit about him? Bartholet: Yeah, I mean, he's a very interesting, somewhat eccentric chara...

史蒂夫:让我们从威廉·范·伊伦这个家伙开始。你为什么不告诉大家一点关于他的事呢?Bartholet:是的,我的意思是,他是一个非常有趣,有点古怪的角色,在现在的印度尼西亚长大,当时它是荷兰的殖民地。他现在87岁了。你知道,他在印度尼西亚的日...


2023-06-28   Intermediate
Talk with Spacewalker Stanley G. Love - Ⅱ

Keywords:

Musser: So how do we avoid this as a country—repeating the same mistake, making the same untoward compromises? Love: Well, first of all we learn about the history of the space shutt...

穆塞:那么,作为一个国家,我们如何避免重蹈同样的覆辙,做出同样的不利妥协呢?爱:首先,我们要了解航天飞机的历史。穆塞:当然。爱:让人们阅读并理解为什么会是这样。我们不应该贬低我们的成就,但也不应该掩盖它不好的地方。我们应该明白太空旅行是昂贵...


2023-06-28   Video
Strange Stars Explained

Keywords:

Neutron stars are the densest things that are not black holes. In their cores, we might find the most dangerous substance in existence: Strange matter. A bizarre thing so extreme, that it ...

中子星是非黑洞的密度最大的物质。 在它们的核心中,我们可能会发现现存最危险的物质: 奇怪的事情。 如此极端的奇异事物, 它扭曲了宇宙的规则 并且可以感染和摧毁它所接触到的一切—— ——或者它可以告诉我们宇...


2023-06-26   Intermediate
Talk with Spacewalker Stanley G. Love - Ⅰ

Keywords:

Musser: Thanks for taking the time out to chat. Love: Sure, no problem. And thanks for being here, and thanks for your magazine, because we need more Americans to be scientific. We'...

穆塞:谢谢你抽出时间聊天。爱:当然,没问题。谢谢你来这里,谢谢你的杂志,因为我们需要更多的美国人来做科学研究。我们有点问题。穆塞:我们需要所有人都是科学的,但我们正在尽我们所能。爱:让我们从这里开始。穆塞:好主意。那么,一个温文尔雅的行星科...


2023-06-26   Video
Think Like a Scientist - Natural Selection in an Outbreak

Keywords:

LINA MOSES: We first started hearing these rumors about a mysterious hemorrhagic disease in Guinea. And honestly, I wasn't thinking Ebola at all. The biggest concern was that there was...

LINA MOSES:我们首先 开始听到这些谣言 关于一个神秘的 几内亚的出血性疾病。 老实说,我不是 完全没有想到埃博拉。 最大的担忧 那儿有 是一些进化的 选择在那里进行。 病毒可能正在发生变化 ...


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