na. 贵金属
[网络] 贵族金属;稀有气体;有气体

Vision of the Future For nearly all of his 86 years, architect Jacque Fresco has been designing cities of the future. Fresco’s structures all derived from a simple form that 1) fascinated him as a b

发表于:2018-11-28 / 阅读(168) / 评论(0) 分类 疯狂英语2004年

By Gary Garriott Broadcast: November 3, 2003 This is Steve Ember with the VOA Special English Development Report. People have been recycling metals for hundreds of years. Today, re-using metal waste o

发表于:2018-12-01 / 阅读(248) / 评论(0) 分类 VOA2003(下)-发展与科学

[00:01.00]Module 2 Developing and Developed Countries [00:09.22]Vocabulary and Listening [00:11.93]Activity 3 Check the meaning of these words [00:16.06]Now listen to the conversation and tick the topics you hear. [02:34.36]Activity 4 Listen again ch

发表于:2018-12-04 / 阅读(261) / 评论(0) 分类 外研社新标准高中英语必修(1-4)

What Makes White Gold White? Many people associate the metal gold with the color gold. But, some gold jewelry is not golden at all: its white. 图片1 Golden Color Gold is one of the heaviest and softest metals. Pure gold, called 24-carat gold, is so

发表于:2018-12-05 / 阅读(130) / 评论(0) 分类 英语听力文摘 English Digest

Archimedes was a Greek scientist. He lives in Syracuse nearly 200 years ago. The King of the land wanted to wear a Golden Crown. He gave some gold to a goldsmith to make a suitable crown. After few days, the goldsmith brought the finished crown to th

发表于:2018-12-08 / 阅读(82) / 评论(0) 分类 英汉幽默故事选读

第一句: We have been importing and exporting all kinds of metals and minerals for thirty years. 我们经营各种金属和矿石的进出口业务已经有30年了。 A: We have been importing and exporting all kinds of metals and minerals for

发表于:2018-12-26 / 阅读(106) / 评论(0) 分类 天天商务口语

What Makes White Gold White? Many people associate the metal gold with the color gold. But, some gold jewelry is not golden at all: its white. Golden Color Gold is one of the heaviest and softest metals. Pure gold, called 24-carat gold, is so soft th

发表于:2018-12-31 / 阅读(117) / 评论(0) 分类 英语听力文摘 English Digest

DEVELOPMENT REPORT - Recycling Scrap Metal Into MoneyBy Gary Garriott Broadcast: Monday, July 31, 2006 This is the VOA Special English Development Report. People have been recycling metals for hundred

发表于:2019-01-02 / 阅读(122) / 评论(0) 分类 2006年慢速英语(七)月

Scientists Find Large Amounts of Precious Metals in Wastewater In recent months, stories about sewers getting clogged have made international headlines. For example, a so-called fatberg, a mass of grease and diapers, clogged London's sewers. A new st

发表于:2019-01-03 / 阅读(157) / 评论(0) 分类 2017年VOA慢速英语(十一)月

This is Scientific Americans 60-Second Science. Im Karen Hopkin. This will just take a minute. Thars gold in them thar hillsand we may have meteorites to thank. Because it appears that a rain of meteors nearly 4 billion years ago peppered the Earths

发表于:2019-01-08 / 阅读(131) / 评论(0) 分类 Scientific American(九)月

This is the VOA Special English Economics Report. Today we continue our report on the group of chemical elements known as rare earth metals. These are mined from the earth and used to make technology from mobile phones to missiles. The United States

发表于:2019-01-12 / 阅读(137) / 评论(0) 分类 2010年VOA慢速英语(十)月

AS IT IS 2015-03-25 Scrap Metal Separation May Become Less Costly 废金属分离技术成本可能会降低 Recycling, or re-using, metals is much less costly than making them from raw materials in the Earth, called ore. But when old cars, household

发表于:2019-01-12 / 阅读(93) / 评论(0) 分类 2015年VOA慢速英语(三)月

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(108) / 评论(0) 分类 VOA标准英语2016年(三月)

The fumes of burning sulphur will bleach straw, silk, and other things, and make them white and clean. These fumes are also useful for killing the germs which cause fevers and other diseases. 燃烧的硫磺冒出的烟,可以漂白稻草、丝绸和

发表于:2019-01-17 / 阅读(136) / 评论(0) 分类 英国学生科学读本

Finance and Economics;The London Metal Exchange;Metal cashing;Who wants to buy the LME? 财经;伦敦金属交易所;金属兑现;谁会买下LME? The sight of a pack of adults shouting at each other is rarely edifying. Unless, that is,

发表于:2019-01-27 / 阅读(117) / 评论(0) 分类 经济学人财经系列

当获悉某人晋升或是在事业上取得巨大成就时,应该打个电话或是写封便签祝贺。这种友好往来对建立和巩固友好的商业合作关系大有益处。 Here are some principles that congratulatory letters follow: 1.

发表于:2019-02-04 / 阅读(93) / 评论(0) 分类 实用英语

The owner of the London Metal Exchange aims to target Chinese commodity traders concerned by speculative excesses on the countrys domestic bourses, with plans to establish a physical metals trading platform in mainland China next year. 伦敦金属交易

发表于:2019-02-05 / 阅读(114) / 评论(0) 分类 英语新闻

Lesson 37 All About A Penny 第37课 关于便士 When I was a little boy, pennies, and halfpennies, and farthings were made of pure copper. But copper is too soft a metal to stand the rubbing which coins get. So these old pennies soon became so smoo

发表于:2019-02-07 / 阅读(110) / 评论(0) 分类 英国学生科学读本

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(131) / 评论(0) 分类 经济学人综合

Vale, the worlds biggest iron ore miner, and Fortescue Metals Group have forged an agreement aimed at boosting their competitiveness in the key market of China, and giving the Brazilian company a foothold in the ore-rich Australian Pilbara region. 世界

发表于:2019-02-18 / 阅读(96) / 评论(0) 分类 英语新闻
学英语单词
administrative powers
alternating tidal current
Atrichum
black-and-white developer
boat hull buoy
brick curb
care of grain binder
carrier chrominance signal
chakil
chitonal
closing sales
common channel signalling
costa propulsion bulb
counter-move
d'asaro
D.Sc.
decaffeinates
divided shielding
drop off the radar
dryloft
Eardisley
elevation error signal
empigen OB
encrust
environmentally oriented
family Typhlopidae
go down the road
good holding ground
grass-roots unit
guidi
Hexsyn
hot wall furnace
hydroxydaphnetoxin
ice mantle
imagery recognition
imaginary cube root
in pile
individual contributors
intelliservers
intercarotid bodies
joint zone
Kaminokuni
kirkuss
lawcourts
leucitoid
low(er) heat(ing) value
Mapp gas
matanin
mecocyanine
memory consumption
methyl bromide poisoning
misericordious
molecular freedom
multiplee
naval court
neohippy
net density filter
New Critic
Nilgaon
Obamafication
ombrophil
paraffin intermediate crude
pedestrian-only
perfect-storm
phallitis
plastic bonding
politico.com
polyrhythm
porous plug experiment
pseudaulacaspis megacauda
pwll
quantitative geomorphology
rami broechiales posrteriores
reckon
red carpet
redraft
regulation
resolubilize
reticular vein netted vein
rhacomitrium delavayi broth
rhyocrystal
Scale Tons
Serbo-Croatian
shallow granitic formation
shot capacity
shouldered arches
sialma
spettell
squalidus
straw yard
superstars
systematic mapping
São Pedro da Cadeira
the BRC
theca cell tumor thecoma
thread whirling machine
triquints
true wood fiber tracheid
typelogical-grammar
unbone
wunder
wyt