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东莞凤岗医院胎记多少钱东莞东华医院做去眼袋手术多少钱Maxwell connected electricity,magnetism,and light.麦克斯韦将电、磁和光相互关联in a series of four equations that I consider to be one of the greatest discoveries in the history of science.创出四组连续方程式 我认为一项厥功甚伟的发现 在科学史上The equations called Maxwells laws...叫麦克斯韦定律的这四组方程式govern everything from the auroras that dawn over the north and south poles...配范围极广 从南北极舞动的极光to the modern electrical and communications technology that powers the planet.到现代电机通讯科技 驱动着全球Virtually every machine in the modern world 现代世界几乎每一台机器from the computer to a power station to a washing machine 从电脑 发电厂到洗衣机works to the rules Maxwell reviewed.都根据麦克斯韦揭露的准则运作Electromagnetism quite literally lights up our planet.电磁学可说照亮了全世界A fitting testament to a great mind.很适切地明了这个人的伟大But light is much more interesting than is Maxwell himself realized.但光比麦克斯韦所理解的有趣得多Although he didnt know it,虽然他不知情he had actually uncovered one of the fundamental clues of the Grand Design.但他其实发现了一条大设计的基本线索That clue is the speed of light itself.这条线索就是光速本身201601/421144东莞妇保医院吸脂手术多少钱 TED演讲集 那些匪夷所思的新奇思想201512/413578The markets are full of dietary supplements,市场上到处都是营养补充剂and its difficult to know which if any might be useful to promote health, resist disease, or improve well being.但是我们很难判断哪种对健康有益,能够提高抵御疾病的能力或者提高身体素质,This presentation will outline the basic information about dietary supplements本讲将会给大家讲述关于营养补充剂的基本信息,and provide helpful information about their contributions to a healthy lifestyle.并且就它们如何帮助我们形成健康的生活方式给大家提供有益的信息Dietary supplements are widely available and used by many Americans.营养补充剂十分普遍,很多美国人都在用它们,There remains much confusion about the value of these products and their impact on overall health.但是关于这些产品的价值以及它们对健康的影响,还有很多疑惑需要解答,This discussion will identify the main types of dietary supplements本讲将会讲述营养补充剂的分类,and clarify when and how they can be used to promote health.以及何时,怎样用才能促进身体健康A supplement is intended to supplement the diet.补充剂是用来补充营养的The main feature of a supplement is that it is very different from food.补充剂的主要特征就是,它与食物十分不同,It contains one or more ingredients such as vitamins, minerals, botanicals,or herbs.它含有多种物质,例如维生素,矿物质,植物性药物或者中草药,And is intended to be taken orally in pill, capsule, liquid, or tablet form.一般需要以片剂胶囊和液体形式下,Supplements are labeled as supplements on their front panel.补充剂在包装上就要标明产品属性In the picture shown on the slide,在幻灯片上的这张图上,you can see that this particular vitamin supplement includes calcium and Vitamin D, which are two ingredients.我们可以看到这种维生素补充剂含有钙和维生素D,它们是两种重要成分,It is taken orally in the form of tablets,它是片剂需要口,and it is labeled as a supplement on its front panel.在包装上直接标明是补充剂Vitamin and mineral supplements have been available to consumers for over 100 years.维生素和矿物质补充剂已经有100多年历史了,These products are typically mixtures of known essential nutrients in quantities defined by the National Academy of Sciences这些产品主要由必须的营养物质组成,这些物质是由国家科学院推荐的and their Recommended Dietary Allowances or the RDA.日摄食量(RDA)确定的The label on these supplements defines the percent of the RDA that is met by one dose of the product.这些补充剂上的标签界定了每单位药剂中包含的RAD比例In general, vitamin and mineral supplements are safe to be consumed when they contain around 100% of the RDA.通常情况下,当维生素和矿物质补充剂中含有100%的RDA时,它们是安全的,Supplements with much more than the RDA, 200% or greater,而如果超过了RDA的量,达到了200%RDAare not necessary and may cause toxicity.那么对人体就是有害的,Recently the market for vitamin and mineral supplements最近维生素和矿物质补充剂的市场进一步扩大,has been expanded to provide mixtures targeting specific populations such as women, men,or the elderly.商家开始提供专为妇女,男士,儿童,老人等不同群体设计的补充剂,These age and gender blends are valuable because,这种区分是十分有益的for example, after menopause women generally do not need iron supplements例如更年期过后的妇女基本上已经不需要补充铁元素了,whereas younger women can benefit from iron supplementation.而年轻女性则需要补充铁元素More recently, some products have been marketed for specific diseases by combining known nutrients with herbal compounds.最近,还有一些产品将营养物质和中草药结合,据说对某些疾病有特殊功效Calcium and Vitamin D supplements are widely used.钙和维生素D补充剂的应用十分普遍Both are required for developed and maintenance of strong bones and teeth.这两种物质对于保持骨骼和牙齿强健都是必不可少的,Calcium helps heart, nerves, and muscles work properly.钙能促进心脏神经和肌肉功能,The total daily intake of calcium should not exceed 2,500 milligrams.每天的钙摄入量不应该大于2500毫克When using calcium supplementation,在用钙补充品的时候,adequate water intake is important to prevent possible side effects of constipation and stomach upset.要同时大量饮水以防止产生副作用,比如便秘和It is recommended not to take these supplements胃部不适,如果曾患过肾结石或者有患前列腺癌的风险,if you have a history of kidney stones or if you are a male at risk for prostate cancer.那么不建议用钙补充液Calcium supplementation can react with blood pressure medications and cholesterol.钙补充液能够与降压药和降血脂药产生反应201512/414365东莞治疗粉刺要哪家医院好

东莞企石桥头东坑镇上睑下垂矫正多少钱Royal divorces generally mean political trouble. The marital problems of Henry VIII plunged England into decades of religious strife and, as we all know, when Edward VIII wanted to marry a divorced woman there was a constitutional crisis that cost him his throne. The object in this programme is associated with a king whose protracted attempts to divorce his queen were, on the contrary, intended to safeguard the kingdom. His failure to do so probably killed him and it certainly led to the termination not only of his line but of his kingdom as well. The object, an engraved rock crystal, tells us his name. Written in Latin, it s: ;Lothair, King of the Franks, caused me to be made;.王室成员的离婚通常会引发政治纷争。亨利八世的婚姻问题曾让英格兰数十年陷于宗教冲突I爱德华八世想迎娶一位离过婚的女士,导致宪制危机,并付出退位的代价。本节的这件物品也与一位国王的婚姻有关,他以延续王国为名处心积虑地想和妻子离婚,最终失败。这件事很可能最终要了他的命,他的血脉与王国也都因此终结。这件水晶雕刻上的拉丁文铭文中有他的名字:“奉法兰克国王洛泰尔之命制作。”201511/407262东莞祛生长纹价格 栏目简介:《趣味科普英语视频》有着浓厚的趣味性,能够增加英语学习爱好者对英语科普知识的兴趣,从而更加开心快乐地学习英语知识,建立起英语学习的基础,为以后学习更多的英语知识奠基,快来边看视频边涨姿势吧!201511/408916广州东莞市华美医院纹眉毛多少钱

莞城人民医院修眉手术多少钱 栏目简介:;Shanghai Live; focuses on big events in the city and major issues around the world, and presents them in a practical and audience-friendly manner to meet the ever-evolving needs of Shanghais English-speaking viewers,both local and expatriate.《直播上海英语电台》集中报道城市大事件以及全球热点话题,并以观众喜闻乐见的方式呈现给大家,从而满足上海本地以及上海海外人士的英语需求。201504/370562东莞市第八人民医院光子嫩肤多少钱同济光华医院激光祛斑手术多少钱



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