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时差N小时

  • 时差N小时 锋利的刀刃有何特别之处?(下)

    First hold the nail with the wide head by its shaft and push it head-first into the ball of clay. Then do the same with the small-headed nail. 首先将宽头钉的杆竖起,将其头朝下推入橡皮泥球。然后对窄头钉再重复一次。 T...

  • 时差N小时 锋利的刀刃有何特别之处?(上)

    Whats So Special About A Sharp Knife? 锋利的刀刃有什么特别之处? Everyone knows that a sharp knife cuts better than a dull one, but do you know why, exactly? 众所周知,锋利的刀刃比钝刀更加锋利,但你知道原理吗? The...

  • 时差N小时 打针有可能会无痛?(下)

    Imagine a platform the size of your thumbnail,made of silicon, metal or glass. 试想它就如拇指指甲盖大小,材料是硅、金属或是玻璃。 The surface is covered with a thousand needles, each no bigger than aperiod at the end of a typ...

  • 时差N小时 打针有可能会无痛?(上)

    From fluvaccines to tetanus boosters, injections are amust in modern medicine. 从流感疫苗到破伤风针,注射在现代医学中是不可或缺的。 But do they always have to makeyou say Ouch? 但是它们是否就一定会让你尖叫呢?...

  • 时差N小时 只有在地球上才能燃烧?(下)

    But before this process had been in place for a while, there wasn't enough oxygen in the air for things to burn. 但是,在此转化之前的一段时间,空气中没有足够的氧气可以燃烧东西。 In fact, of all the planets, moons, aste...

  • 时差N小时 只有在地球上才能燃烧?(上)

    What is fire anyway? 火究竟是什么? Well, fire is rapid oxidization. It's the energy released when oxygen atoms start combining with carbon and hydrogen atoms. 火,即燃烧,是快速的氧化反应。氧化反应是氧原子和碳原子或氢...

  • 时差N小时 猴子如何示爱?(下)

    Many other brain areas lit up as well, such as memory formation, information integrationin other words, areas associated with decision-making. 许多其他的大脑区域也被激活,比如记忆形成、信息整合换句话说,与决策相关的区...

  • 时差N小时 猴子如何示爱?(上)

    Marmosets are small primates. 绒猴是小型灵长类动物。 Think of a monkey with huge fuzzy ears. 想象一只有巨大、毛绒绒耳朵的猴子。 Primatologists have often wondered whether nonhuman males evaluated their potential mates, or...

  • 时差N小时 适当的运动能提高智商?(下)

    One of the studies divided a group of seniors into two different six-month exercise courses one course consisting of aerobic exercise, the other consisting of stretching and toning. 其中一项研究将老人们分为两组:一组做有氧运动;另...

  • 时差N小时 适当的运动能提高智商?(上)

    Stretching and toning are certainly important, but their benefits are different from that of aerobic exercise. 伸展和拉伸当然很重要,但是,这些运动对身体的益处与有氧运动不同。 Surprisingly, aerobic exercise isn't just...

  • 时差N小时 为什么我们需要睡眠?(下)

    More specifically, the study found that sleep sort of changes the brain's cellular structure. 更确切的说,该研究发现睡眠在某种程度上改变了大脑的细胞结构。 When the mice were asleep or anesthetized, the researchers found...

  • 时差N小时 为什么我们需要睡眠?(上)

    Dear A Moment of Science, 亲爱的《科学一科》栏目组: Why do we sleep? 我们为什么需要睡觉? I know this question has been debated by scientists and philosophers for centuries, but are there any hard and fast answers? 我知道科学...

  • 时差N小时 大脑是静止的还是变化的?(下)

    In any case, in a recent experiment, scientists working with mice shut down their brains' ability to make new cells. 不管怎样,在最近的一次实验中,科学家们用老鼠进行实验,他们消除了这些老鼠们大脑生成新细胞的...

  • 时差N小时 大脑是静止的还是变化的?(上)

    Scientists used to think that for all its complexity, the brain was pretty static. 科学家们过去常常认为,大脑因为其复杂性而呈现出静止状态。 Once the brain matured, it essentially stopped growing and changing. 一旦成熟,...

  • 时差N小时 烟酒不分家的说法科学吗?(下)

    Those who smoked nicotine-free cigarettes didn't report as much satisfaction, which indicates that the nicotine itself plays a critical role in the interaction. 那些抽没有尼古丁香烟的人并没有感受到满足感,由此表明尼古丁在相...

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