常速英语

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The kidneys are two bean-shaped organs, each about the size of a fist. They are located just below the rib cage, one on each side of your spine. Healthy kidneys filter your blood, maintaining a hea...

肾脏是两个豆状器官，每个大约有拳头那么大。它们位于肋骨下方，脊柱两侧各一个。健康的肾脏过滤血液，保持水、盐和矿物质的健康平衡，同时排出尿液中的废物。没有这种平衡，神经、肌肉和其他组织就会停止正常工作，最终可能会失败。这被称为慢性肾病，是一个...

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PER AHLBERG: You have this fish that's-- it's like a sort of living time machine. SAMANTHA WEINBERG: It was like looking at a dinosaur, this creature that has been around for 400 milli...

PER AHLBERG：你有这条鱼--这就像一种活时间机器。萨曼莎·温伯格：就像在看在恐龙面前，这种生物那已经存在了4亿年。[音乐播放]基思·汤姆森：确实如此1938年12月22日。在这个炎热的十二月南非东伦敦，一艘拖网渔船进城放下满载的鱼...

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If you saw a wormhole in reality, it would appear round, spherical, a bit like a black hole. Light from the other side passes through and gives you a window to a faraway place. Once crossed, the...

如果你在现实中看到一个虫洞，它会看起来是圆形的，球形的，有点像黑洞。来自另一边的光穿过，给你一扇通往遥远地方的窗户。一旦穿过，另一边就会完全进入视野，你的老房子现在正退到闪闪发光的球形窗户里。但虫洞是真的吗，还是它们只是伪装成物理和数学的魔...

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SPEAKER: From zebra stripes, to cracked mud, to honeycombs, patterns abound in nature. Are these patterns just pleasing to the eye or do they reveal something about biological processes? ...

演讲者：从斑马条纹，裂泥，蜂窝，自然界中充满了图案。这些模式只是赏心悦目或者他们透露了什么吗关于生物过程？对于生态学家来说，了解机制下层植被模式可以提供见解生态系统动力学。科琳娜·塔妮塔从未想象过生物学将是她的命运。作为三次罗马尼亚人数学奥...

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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...

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NARRATOR: African savannas are famous for their diversity of large mammals. But how do so many similar species coexist in the same place? Princeton University biologist Rob Pringle i...

旁白：非洲大草原以其多样性而闻名大型哺乳动物。但这么多人是怎么做到的相似物种在同一个地方共存？普林斯顿大学生物学家Rob Pringle被这个问题迷住了。这是一个持久的生态学的奥秘。他的团队正在莫桑比克戈隆戈萨国家公园。他们的重点是三个紧密...

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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...

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So termites build these huge, huge mounds. And inside the mound, there's a great deal of activity that's going on. So termites go out. They forage for plant material, which they find in actual...

所以白蚁建造了这些巨大的土堆。在土堆里，有很多东西所以白蚁会出去。它们寻找植物材料在实际的植物、垃圾或动物中发现粪。他们把那株植物带回来了材料到巢。他们把它分解了。他们吃它。在这个过程中，它们以某种形式产生大量的营养物质这种氮和磷。此外，如...