365个英语简短小故事-335. The Vacuum Cleaner Filter(2)

But the HEPA filter for Olivers Vibe got dirty very quickly. And, it was not cleanableit was simply replaceable. When it turned filthy brown, Oliver went back to Target to buy a new filter. Oddly, Target sold the F15 belt for the Vibe, but not the fi

60秒科学:多细胞生物不需要氧气

As scientists delve deeper beneath the oceans surface, they find bizarre creatures that have adapted to harsh and extreme environments. Now comes a new onethe discovery of the first multicellular animals that survive and reproduce entirely without ox

Indian Scientists Invent Nose Filter to Protect Against Air Pollution

From VOA Learning English, this is the Health Lifestyle report. In parts of India, it is not uncommon to see people wearing a mask over their nose and mouth. The capital, New Delhi, has some of the world's dirtiest air. The pollution was a call for a

专业术语—口腔生理学术语G2(英文详解)

Glucosamine - a glucose or galactose molecule with an amine group attached. see also glucuronic acid. Glucose - a molecule of great importance to life as it provides a ready source of energy for both

专业术语—口腔生理学术语E1(英文详解)

Ecological balance - astable balance in the numbers of each species in an ecosystem. In the ecosystem of the mouth this balance is brought about by competition and cooperation between the different or

专业术语—口腔生理学术语A3(英文详解)

Apatites- a family of calcium phosphate salts which are found in hard tissues like bone, teeth and shells. Apoptosis - death of a cell which is programmed by a set of specific genes. Apoptosis of chon

专业术语—口腔生理学术语A2(英文详解)

Ameloblasts- cells which differentiate from ectoderm and secrete enamel during tooth development. Amino acids - building blocks of proteins containing a carboxyl group (COOH) and an amino group(NH2) b

专业术语—口腔生理学术语A1(英文详解)

Abductors - muscle taking a limb or the jaw away from the body. Acetyl choline - Aneurotransmitter substance found at all cholinergic synapses including those of motoneurones at the neuromuscular junc

SSS 2010-04-09

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This'll just take a minute. As scientists delve deeper beneath the oceans surface, they find bizarre creatures that have adapted to harsh and extreme environments. Now comes a new o

食品方面的词汇

A acceptable daily intake (ADI) 每人每日容许摄入量 acclimatization 气候适应 accumulate 蓄积 acetylandromedol 乙酰柽木醇毒 acceptable risk level 可接受的危险水平 acid-forming food 成酸性食品 Achromobacterium 无色菌属 Act for preventing the adulterati

VOA慢速英语2015 巴勒斯坦人将有机废物转化成天然气做饭

AS IT IS 2015-09-18 Palestinians Turn Organic Waste into Gas for Cooking 巴勒斯坦人将有机废物转化成天然气做饭 Rural communities in developing countries often have trouble securing dependable supplies ofenergy for cooking and lightin

2007年VOA标准英语-Water Filter Wins Developer Engineering Prize

By Tabinda Naeem Washington, D.C. 21 May 2007 Two years ago, the National Academy of Engineering established the Grainger Challenge Prize for Sustainability. This $1 million award was designed to challenge the world's scientists to develop a practica

英国生态公交车用大便做燃料

Britain's first bus powered by human waste has taken to the streets. 近日，英国首辆靠人类粪便供能的新型环保巴士正式上路。 The 40-seater 'Bio-Bus' is fuelled by biomethane gas, generated by the treatment of sewage and food wa

雅思阅读词汇：探索太空生命(1)

a high spatial resolution 高空间分辨率 a xenon-lamp 氙灯 abode n. 住所，住处 absence n. 缺乏 acceptor n. 接受者 access v. 接近 aerobic adj. 依靠氧气的，与需氧菌有关的

万物简史 第424期:生命的起源(18)

Even we can tolerate it only up to a point. 连我们对氧的耐受力也是有限度的。 The oxygen level in our cells is only about a tenth the level found in the atmosphere. 我们细胞里的氧气浓度，只有大气里的大约十分之一。

万物简史 第423期:生命的起源(17)

Anniversaries were few and far between in the Archaean world. 在太古代的世界里，结婚周年纪念日是完全没有的。 For two billion years bacterial organisms were the only forms of life. 在20亿年时间里，细菌是惟一的生命形

经济学人331:运动员的表现

Science and technology 科学技术 Athletic performance 运动员的表现 Faster, higher, no longer 更快，更高已成往事 Is it time to update the Olympic credo? 是时候更改奥运会信条了？ ON AUGUST 5th millions of people will watch

经济学人:四条腿朋友的代价 粪量变能源

United States: Pet waste A crap-shoot 美国：宠物粪便，从粪便里发出的新芽 The city ponders a plan to make power from puppy poop. 在宠物粪便中提取能源，该市构建着一幅如此蓝图。 Dogs, unlike people, are capable of

比较难以记住的GRE词汇

比较难以记住的GRE词汇 holistic 全面的，从整体着眼的 virtually almost virtual in fact mucus 粘液 by virtue of 由于 shrank 缩小，shrink 的过分 pool 集中备用的工人、钱或物资 syntax 句法，句子构造 grid grat

欧美人文风情第128篇:十大误解概要 - 喝八杯水必要吗?

Number ten. The Great Wall of China is the only man-made object visible from space. 第十。中国长城是唯一能在太空中看到的人造物体。 To see something on Earth from space, it would have to be pretty big, 要从太空看到地球上的