科学研究   慢速英语

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And every five to seven years,the batteries that supply power must be changed.This requires another operation.Dr. Marban says the devices are not right for all patients.And others are too sick to use ...

而且每 5 到 7 年，必须更换一次供电的电池。这需要另一次手术。Marban 医生说，这些设备并不适合所有患者。而其他人病得太重，无法使用它们。他说，研究人员计划在大约两年内将实验基因放在病情严重的患者中。他们想证明这个基因既安全又有效。...

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A woman paralyzed from the neck down has learned to use her thoughts to control a specially-designed motorized arm.The arm is the product of years of research on mind-controlled artificial limbs.Resea...

一名脖子以下瘫痪的妇女已经学会了用她的思想来控制专门设计的电动手臂。这只手臂是多年对精神控制假肢研究的产物。美国宾夕法尼亚州的研究人员表示，电动手臂是有史以来最先进的精神控制假肢或替代肢体。他们创造了这个装置，以帮助 Jan Scheuer...

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The World Health Organization says iron deficiency is the most-common micronutrient disorder worldwide.WHO officials also say iron deficiency is a leading cause of anemia.About two billion people suff...

世界卫生组织表示，缺铁是全球最常见的微量营养素疾病。世卫组织官员还表示，缺铁是贫血的主要原因。大约有 20 亿人患有这种疾病，据信 40% 的学龄前儿童患有贫血症。20% 的孕产妇死亡部分与低铁水平有关。专家表示，儿童生命的前三年是语言和言...

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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。该研...

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Sleeping sickness cannot be prevented by a vaccine or medicine. So to avoid the disease, a person must avoid the tsetse fly. Avoiding the fly can be simple. Wearing thick clothes that cover the skin p...

昏睡病不能通过疫苗或药物来预防。因此，为了避免这种疾病，一个人必须避免采采蝇。避免苍蝇可能很简单。穿厚衣服遮盖皮肤可以防止苍蝇叮咬。如果衣服颜色不鲜艳，它也会有所帮助。采采蝇像五颜六色的衣服一样飞翔。 在进入车辆之前，在车内寻找采采蝇...

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Maman Louise lives in the city of Nkayi in western Congo. During a civil war in her country, she had to leave her home. She stayed in the forest for two years. During this time, she started acting str...

Maman Louise 住在刚果西部的 Nkayi 市。在她的国家发生内战期间，她不得不离开自己的家。她在森林里呆了两年。在这段时间里，她开始表现得很奇怪。她讲述了自己的行为： “我的眼睛在头上翻来覆去，我无法停止说话。有时我开始唱...

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Each month was 30 days.Then, they divided each day into 24 equal parts,or hours.They divided each hour into 60 minutes,and each minute into 60 seconds.Humans have used many devices to measure time.The...

每个月是 30 天。然后，他们将每天分成 24 个相等的部分或小时。他们将每个小时分为 60 分钟，将每分钟分为 60 秒。人类已经使用许多设备来测量时间。日晷是最早和最简单的日晷之一。日晷测量太阳每天在天空中的运动。它有一根棍子或其他物体...

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“[Instead of] excelling physically outdoors, I stay in and think creatively. I write music and come up with program ideas. I use my mind [instead of] my body.” There is no cure for Sickle Cell Anem...

[而不是] 在户外表现出色，而是呆在家里并创造性地思考。我写音乐并提出程序创意。我用的是我的思想 [而不是] 我的身体。 镰状细胞性贫血无法治愈。但这是可以预防的。你看，镰状细胞性贫血是一种遗传性疾病。正是在基因中，父母传递给了他们的...