[化] 含铅氧化锌; 含铅锌白

SSS 2009-04-24

This is scientific Americans 60-Sencond Science. I am Karen Hopkin. This will just take a minute. When you think about silk, you probably think of gossamer fibers woven into lustrous garments or decadently soft bedsheets. But silk is also prized for

发表于:2018-12-24 / 阅读(59) / 评论(0)

Scientific American(四)月

英语沙龙:Fresh Richer-新贵

Fresh Richer A fresh richer is purchasing coffin in the store for the death．A person asks him：Which one is better？He says：Of course the zinc1)－filled is more durable2)，but the wooden is helpful to the health．新贵一个新贵在墓葬

发表于:2019-01-01 / 阅读(69) / 评论(0)

英语沙龙

VOA慢速英语20060727a

EDUCATION REPORT - 'Iron Science Teacher' and More at the ExploratoriumBy Nancy Steinbach Broadcast: Thursday, July 27, 2006 This is the VOA Special English Education Report. The Exploratorium is hous

发表于:2019-01-02 / 阅读(85) / 评论(0)

2006年慢速英语（七）月

SSS 2010-04-14

One main goal in the renewable energy field is to find an efficient, inexpensive way to split water into hydrogen and oxygen. The hydrogen could then be used as a fuel source for vehicles or fuel cells. Typically, an electric current breaks the water

发表于:2019-01-08 / 阅读(85) / 评论(0)

Scientific American(四)月

吃坚果有助保持健康

Eat Nuts to Stay Healthy 吃坚果有助保持健康 From VOA Learning English, this is the Health Lifestyle report. People have long known that nuts are part of a healthy diet. However, scientists in the Netherlands recently found that you do not ne

发表于:2019-01-12 / 阅读(48) / 评论(0)

2015年VOA慢速英语(七)月

投资者寻求避险:黄金、石油价格上涨

Gold, Oil Prices Up as Investors Seek Safe Haven 投资者寻求避险:黄金、石油价格上涨 NEW YORK The up-and-down prices of oil and gold mirror the unsettled world situation, and both reflect the economic squeeze most nations currently face

发表于:2019-01-14 / 阅读(69) / 评论(0)

VOA标准英语2016年(三月)

原版英语对话：Having a Cold(2)

A: How are you feeling today? B: I have a terrible cold! A: Where do you think you picked that up? B: A lot of people in my gym have it. Maybe I got it from the equipment. A: Have you taken anything for it? B: I think that I am just going to rest and

发表于:2019-01-15 / 阅读(68) / 评论(0)

英语情景对话-健康

TED演讲:怎样选择适合你的防晒霜(1)

Sunscreen comes in many forms, each with its own impacts on your body and the environment. 防晒霜有很多种，每种对你的身体和环境影响各有不同。 With so many options, how do you choose which sunscreen is best for you? 有了这么

发表于:2019-01-17 / 阅读(98) / 评论(0)

TED演讲教育篇

英语四级听力-短对话 211

Passage One 26. A. They were possibly caused by man. B. They were mostly caused by volcanoes. C. They were certainly caused by nature. D. We know nothing about their causes. 27. A. Afraid. B. Excited. C. Curious. D. Indifferent. 28. A. Copper and iro

发表于:2019-01-25 / 阅读(130) / 评论(0)

英语四级听力-短对话

神探夏洛克第一季第二集_7

神探夏洛克第一季第二集_7 你知道这谁画的么我认得这颜料 Know the author? I recognise the paint. 像密歇根产的喷力强劲 It's like Michigan...hard-core propellant. 我猜含锌 I'd say zinc. 那个符号呢你认识么

发表于:2019-01-28 / 阅读(211) / 评论(0)

神探夏洛克第一季

SCIENCE IN THE NEWS - From A to Zinc: The Story of Vitamins

SCIENCE IN THE NEWS - From A to Zinc: The Story of Vitamins By Nancy Steinbach Broadcast: Tuesday, March 29, 2005 (MUSIC) VOICE ONE: I'm Bob Doughty with Phoebe Zimmermann, and this is the VOA Special

发表于:2019-01-30 / 阅读(93) / 评论(0)

科技之光

这个秋天吃更多什么食物来保持你的皮肤健康

What can you eat this fall to keep your skin healthy, soft and smooth while preventing wrinkles from forming? Ask a dermatologist or a nutrition expert. They will tell you that a well-balanced diet containing antioxidants will really help to keep ski

发表于:2019-02-01 / 阅读(117) / 评论(0)

实用英语

万万没想到：原来红薯这么有营养！

Here are some facts about sweet potatoes you probably don't know: 这里有一些关于红薯你可能还不知道的事实： Sweet Potatoes Originated in the Americas 红薯起源于美洲 They're in the family of plants that includes morning glori

发表于:2019-02-02 / 阅读(53) / 评论(0)

阅读空间

Zinc Leads to Shorter, Milder Colds

Zinc supplements reduce the average cold by about a day and also make symptoms（症状） less severe, according to the latest findings. There's no cure for the common cold, but there's no shortage of ways to treat the symptoms. For a number of year

发表于:2019-02-05 / 阅读(66) / 评论(0)

英语新闻

圣诞节习俗：奥地利的圣诞习俗

奥地利 Christmas celebrations start with the feast of St. Nicholas. Saint is accompanied with a devil. He asks small children about their good and bad actions. Toys, sweets and nuts are gifted to good children. Brass instruments are used for playi

发表于:2019-02-13 / 阅读(48) / 评论(0)

英语作文

经济学人236:金属,自己愈合吧 Metal,heal thyself

Metal, heal thyself 金属，自己愈合吧 Materials science: Researchers have devised an ingenious way for the damaged surfaces of metals to repair themselves when they come to harm 材料科学：研究人员构想出了一种新颖独特的方法，

发表于:2019-02-17 / 阅读(73) / 评论(0)

经济学人综合

如何地道表达“冷死了”？

1. It's freezing/chillyout there! 外面冷死了! 2. It's a bit nippytoday, but I will still run my usual distance。虽然今天有点冷，但我还是会坚持和往常跑一样远的。 3. There is a real nip in the airtoday。今天寒气袭人

发表于:2019-02-17 / 阅读(46) / 评论(0)

英语口语

保持头发健康的最佳食物

It takes more than shampoo and conditioner to maintain the charm of shiny and manageable hair. See what you should eat to keep those tresses healthy, alluring and strong. 为了维持有光泽且易打理的头发，仅仅用洗发水和护发素是不

发表于:2019-02-17 / 阅读(132) / 评论(0)

阅读空间

万物简史第226期:把铅撵出去(15)

Absurdly, he was excluded from a 1971 National Research Council panel appointed to investigate the dangers of atmospheric lead poisoning even though he was by now unquestionably the leading expert on atmospheric lead. 荒唐的是，一个美国研究委

发表于:2019-02-17 / 阅读(55) / 评论(0)

万物简史

历年考研英语的高频单词-Z

发表于:2019-02-18 / 阅读(72) / 评论(0)

考研英语

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a-homered

acute bacillary dysentery