四溴三氯化磷

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发表于:2018-12-03 / 阅读(273) / 评论(0) 分类 20本英文音韵童谣小书(文本+音频)

AS IT IS 2016-06-22 Brexit Vote Is Too Close to Call Opinion studies in Britain show almost equal support for staying and remaining in the European Union ahead of a vote on the issue Thursday. British Prime Minister David Cameron made an appeal Tuesd

发表于:2018-12-08 / 阅读(231) / 评论(0) 分类 2016年VOA慢速英语(六)月

凯文布莱尔并不像一个抑郁的小孩:他是篮球队队长,参加各种派对,幽默并且自信。但它讲述的是有一个晚上他认识到拯救他自己的人生,他需要的只是说四个字。

发表于:2018-12-09 / 阅读(279) / 评论(0) 分类 TED演讲集:人生经验与告白

今天要讲的三个习惯用语都是和零碎的小东西有关。他们之间的区别只是使用的场合不同,或者是来源不一,用法相近。现在我们就分别为各位讲解这三个习惯用语。他们是:odds and ends, knic

发表于:2018-12-16 / 阅读(251) / 评论(0) 分类 美国习惯用语

The little splints of wood which we call matches are made out of deal or pine wood which has been soaked in melted paraffin wax to make it burn more easily. 这种被我们称之为火柴的薄木片由欧洲赤松(松树)制成, 在液体的石蜡

发表于:2018-12-18 / 阅读(164) / 评论(0) 分类 英国学生科学读本

Have you ever had a problem getting a match to light? If so, you might be using the wrong type of match. There are actually two different types of matches: safety matches and strike-anywhere matches. 以前你点燃火柴时有没有点不着的时候呢

发表于:2018-12-18 / 阅读(150) / 评论(0) 分类 2018年NPR美国国家公共电台2月

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

发表于:2018-12-24 / 阅读(210) / 评论(0) 分类 Scientific American(一)月

Grammar Girl here. Today's topic is words that can get you into trouble. Guest-writer Bonnie Trenga writes: Once upon a time, some mistaken citizens stood up for American principals, p-r-i-n-c-i-p-a-l-s. Across the Atlantic, a nutty queen sat on her

发表于:2019-01-02 / 阅读(270) / 评论(0) 分类 英语语法 Grammar Girl

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(196) / 评论(0) 分类 医务英语

This is Scientific American's 60-Second Science, I'm Christopher Intagliata. Got a minute? Life on earth requires six basic ingredientscarbon, hydrogen, nitrogen, oxygen, sulfur and phosphorus. Those six elements are the building blocks for DNA and R

发表于:2019-01-08 / 阅读(179) / 评论(0) 分类 Scientific American(十二)月

英国脱欧迎来戏剧性变化。当地时间3日,英国高等法院裁定,政府在正式启动脱欧程序前需经议会批准。英国政府对这一裁定表示失望,并第一时间表示将上诉至最高法院。不少公司在英国的

发表于:2019-01-08 / 阅读(401) / 评论(0) 分类 英文语法词汇

This is the VOA Special English Agriculture Report. Hogs at an Ohio farm Research shows that waste from pigs that are fed a special kind of corn may help a farmer's crops. And it also may help the environment. Any farmer who raises swine knows that

发表于:2019-01-11 / 阅读(224) / 评论(0) 分类 VOA慢速英语2008年(八)月

By Peter Fedynsky Moscow 18 July 2007 Officials in Ukraine are assessing the damage of a train crash in western Ukraine that sent huge clouds of burning phosphorus billowing into the air. The accident, which took place Monday, is raising health conce

发表于:2019-01-12 / 阅读(186) / 评论(0) 分类 2007年VOA标准英语(七月)

Ethiopia will accomplish the construction at any cost whether donors continue funds or not. The giant Gibe III dam, now being built on the Omo River in southwestern Ethiopia is a boon for some, a problem for others. Supporters say it will provide ele

发表于:2019-01-14 / 阅读(230) / 评论(0) 分类 VOA标准英语2010年(九)月

MARY LOUISE KELLY, HOST: Summertime brings algae blooms to many parts of the country - those mats of bright green organisms that can blanket waterways. In places like Florida's Lake Okeechobee, the blooms hurt tourism. They kill fish. They threaten w

发表于:2019-01-17 / 阅读(181) / 评论(0) 分类 2018年NPR美国国家公共电台7月

The commercial potential for the stuffwhich soon became known as phosphorus, from Greek and Latin roots meaning light bearingwas not lost on eager businesspeople, but the difficulties of manufacture made it too costly to exploit. An ounce of phosphor

发表于:2019-01-29 / 阅读(161) / 评论(0) 分类 万物简史

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

发表于:2019-02-17 / 阅读(219) / 评论(0) 分类 万物简史

SANYA, Hainan, Dec. 4 (Xinhua) -- The five BRICS nations intend to focus and work together on developing alternative energy sources. When Bu Xiaolin, vice governor of China's coal-rich Inner Mongolia autonomous region, spoke over the weekend in front

发表于:2019-02-17 / 阅读(183) / 评论(0) 分类 英语新闻

Matches Striking matches, on this Moment of Science. Have you ever had a problem getting a match to light? If so, you might be using the wrong type of match. There are actually two different types of matches: safety matches and strike-anywhere matche

发表于:2019-02-26 / 阅读(168) / 评论(0) 分类 英语听力文摘 English Digest

台湾籍旅美老师今天交给我们的句子是: We'll get up close with prototypes in new categories like 3D printing, robotics, smart home sensors. And wellsome things that don't even have a category yet. 我们会接近各种新科技的原型

发表于:2019-03-05 / 阅读(281) / 评论(0) 分类 留美老师带你每日说英文
学英语单词
A-R steel
ACWRRE
airborne gamma-ray spectrometry
all righto
alpha-iodine
AMTREX
at the two and four nucleate stages
auriculoacupuncture
avirage
bend over backward
between the upper and lower millstones
bialystock
blackly
border town
bulling of cargo
castration cells
catatorulin
catharometry
cave-paintings
chloregal acid chlorination process
collector ring brush
community-driven
Continuously variable.
cytolysate
do somebody down
dosse
ecclesiological
empirical average
enwalled
Eugene O'Neill
euphylls
fallout ratio
finetuner
fissium
full colour
galimore
give up a hobby
gloeosporium kawakamii miyabe
gradient-board
Helse
horizon distance
horseshoe dissepiment
hoverferry
hypobranchial bone
hypoglycemic (agent)
i would say
i-used
illustration
in mitigation
individual pocket dosimeter
inflict damage on
interior oblique muscle
interlocking barrier guard
internal rubber mixer
karpa
Kaugama
maintain-ability
network configuration management
niobium extraction by converter blowing
nontransitioning
on the edge of one's chair
ophthalmomanometer
orthodromics
paravidya
party injured
pecuniary condition
period of money and credit economy
Port Moresby
primogyn M
priority selection table extension
protective clothing
protons
punch retrieval
reserve for inventory of supplies
revolution speed of propeller
Rhynchosia kunmingensis
Rome wasn't built in a day
rubber plaster
sacro-coxitis
schmidt projection system
scrapwood
selective (targeted) employment subsidies
Shubarshi
simplex milling machine
snap mode
stern drive
styliferous
summon the defendent
superpresence
supply air
Symplocos crassilimba
tayac
the same old song
total head value
transverse springs
true-banked turn
ungrammatic
upper workings
viequess
watch carefully
welted seam
xenazoic acid