四乙基铅

小学英语300句lesson16

151 There is a kite in the sky. 152 It's like a bird. 153 It's very high. 154 Is there a football under the chair? 155 Yes there is. 156 There are some footballs under David's chair. 157 There is a piece of bread. 158 There is some water. 159 Are the

发表于:2018-11-30 / 阅读(161) / 评论(0)

小学英语300句

VOA慢速英语2010年-Snowflakes and Sugarplum Fairies? Yep,

FAITH LAPIDUS: And Im Faith Lapidus with EXPLORATIONS in VOA Special English. Today we enter a world of Christmas magic, snowflakes, sweets and sugarplum fairies. The Nutcracker is one of the most popular ballets in the world. It is also an important

发表于:2018-12-01 / 阅读(171) / 评论(0)

2010年VOA慢速英语(十二)月

VOA慢速英语2014 科学家们寻找新的方法来对付蚊子

AS IT IS 2014-05-25 Scientists Search for New Ways to Stop Mosquitoes 科学家们寻找新的方法来对付蚊子 The sound of a mosquito can mean trouble in many parts of the world. The bite of a mosquito can be deadly. Today, we will hear about s

发表于:2018-12-08 / 阅读(111) / 评论(0)

2014年VOA慢速英语(五)月

VOA双语新闻：3、美科学家研发新一代驱蚊剂

美科学家研发新一代驱蚊剂 In many regions of the world, mosquitoes are a seasonal pest. In other regions, they carry serious diseases like malaria. The World Health Organization estimates that almost 630,000 people died of malaria-related

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VOA双语新闻 2014年1月

SSS 2012-01-24

This is Scientific American Sixty Seconds Science, I'm Sophie Bushwick, got a minute? When Mexican tetra fish moved into darker caves long ago, they evolved to deal with the dark by becoming albino and going blind. A new research shows that the chang

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Scientific American(一)月

不择手段背单词(687):bane祸根

bane, [bein] n 祸根（死亡或毁灭的根源）；致命伤【例】the bane of one's existence 克星【记】1）ban挡住－挡住运气－祸根 2）读：背。点儿背－祸根【反】blessing（n 祝福）；benefit（n 利益好处）

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不择手段背单词

不择手段背单词(623):avarice

avarice n 贪财＝cupidity＝rapacity 【根】avar渴求。avid（adj 渴望的）【记】ava读：爱挖，rice大米。爱挖大米。这种人是不是有周八皮的风范！连大米都不放过，太贪财了！【类】avarice:money＝glu

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不择手段背单词

英语儿歌274首第166期:Plum Blossoms

歌词如下： Sweet plum blossoms fine and whate. Did you open in the night? Yestoday the tree was bare. Now it's covered everywhere! One and two and three and four. I can't count how many more!

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英语儿歌274首

专业术语—中草药成分英汉对照词汇T1

T Tanshinone IIA 丹参酮IIA Tanshinone I 丹参酮I Tanshinone IIB 丹参酮IIB Taraxasterol 蒲公英甾醇 Taraxerol 蒲公英赛醇 Tauro ursodesoxy cholic acid 牛磺熊去氧胆酸 Taxifolin 花旗

发表于:2019-01-03 / 阅读(86) / 评论(0)

医务英语

VOA常速英语2014--Promising Mosquito Repellent Announced 美科学家研发新一代驱蚊剂

Promising Mosquito Repellent Announced美科学家研发新一代驱蚊剂 In many regions of the world, mosquitoes are a seasonal pest. In other regions, they carry serious diseases like malaria. The World Health Organization estimates that almost 6

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VOA标准英语2014年(一月)

白领英语晨读-011 To Attract Police　吸引警察

One Police stops on police vehicle outside one Victoria's Bar. After the preparation, as necessary arrests?, this liquor drive slightly mixes. Suddenly he sees to have a young people shakely goes out from bar, spend the many figures only then finds

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白领英语晨读

DEVELOPMENT REPORT - Plumpy'nut Aids Fight Against Hunger

DEVELOPMENT REPORT - Plumpy'nut Aids Fight Against Hunger By Jill Moss Broadcast: Monday, April 25, 2005 I'm Gwen Outen with the VOA Special English Development Report. Nutriset is a food company in F

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农业与发展

万物简史第227期:把铅撵出去(16)

On its website, a history of the company makes no mention of leador indeed of Thomas Midgleybut simply refers to the original product as containing a certain combination of chemicals. 在它的网站上，公司的历史没有提及铅──也没有提

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万物简史

万物简史第225期:把铅撵出去(14)

By counting back through these layers and measuring the amount of lead in each, he could work out global lead concentrations at any time for hundreds, or even thousands, of years. The notion became the foundation of ice core studies, on which much mo

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万物简史

万物简史第213期:把铅撵出去(2)

Lead is a neurotoxin. Get too much of it and you can irreparably damage the brain and central nervous system. Among the many symptoms associated with overexposure are blindness, insomnia, kidney failure, hearing loss, cancer, palsies, and convulsions

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万物简史

万物简史第212期:把铅撵出去(1)

10 Getting The Lead Out 第十章把铅撵出去 In the late 1940s, a graduate student at the University of Chicago named Clair Patterson (who was, first name notwithstanding, an Iowa farm boy by origin) was using a new method of lead isotope measur

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万物简史

南非政府正在紧锣密鼓的准备曼德拉的葬礼

南非政府正在紧锣密鼓的准备曼德拉的葬礼 JOHANNESBURG, Dec. 7 (Xinhua) -- The South African government announced on Saturday that preparations are in full swing for the funeral of former president Nelson Mandela. Among the arrangemen

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英语新闻

TED演讲获奖青少年,科技在行动(1)

If you were going to a restaurant and wanted a healthier option, 如果你去饭店，你想吃得健康一点， which would you choose, grilled or fried chicken? 你会选择哪种食品呢，烤鸡还是炸鸡？ Now most people would answer grill

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TED演讲教育篇

男人女人都爱听的7句话

1.Yes. 好的。 2.Id rather be with you 我更愿意跟你待在一起 3.Are you free Saturday night? 周六晚上有空吗? 4.Theres something you do that I find adorable. 我发现有时你很可爱。 5.That looks good on you. 你看上去帅呆了

发表于:2019-02-26 / 阅读(84) / 评论(0)

英语口语

不可错过的中国四大古曲

传统意义上的古曲是指中国古代流传下来的，有较高知名度的乐曲。这些古曲大多属于器乐曲，而且大都出于诗人之手创作而成。在中华5000多年的文化长河中，古曲(古诗词歌曲)是中华民族的

发表于:2019-02-26 / 阅读(112) / 评论(0)

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学英语单词

aluminium tube brackets

angle-shearing machine

annulus conjunctive

axial coil

backward aerofoil blade