[化] 五硫化二磷

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(209) / 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(179) / 评论(0) 分类 2018年NPR美国国家公共电台2月

圣诞节快到了,听厌了Jingle Bell吗?就让Jenny和Connor来为大家推荐一些不一样的歌吧。这些都是欧美正当流行的热门圣诞歌曲哦! 圣诞歌曲英语怎么说? 圣诞歌曲除了Christmas songs,还可以说:

发表于:2018-12-19 / 阅读(214) / 评论(0) 分类 美国文化脱口秀

I couldn't get over this mess. The federal government is confirming what Joan Glickman of Pompano Beach, Florida suspected all along. Tainted drywall from China is giving off a harmful gas that's turning her air-conditioning wiring black, causing it

发表于:2018-12-20 / 阅读(196) / 评论(0) 分类 cnn2009年(十一)月

Mercury Fillings Seem Safer over Time A study in the journal Chemical Research in Toxicology finds that mercury on the surface of dental fillings slowly turns to an inert sulfide compound, which should keep the mercury from harming the nervous system

发表于:2019-01-02 / 阅读(273) / 评论(0) 分类 60秒科学

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(210) / 评论(0) 分类 Scientific American(十二)月

Mary, Did You Know? - Pentatonix Mary did you know take your baby boy 玛丽你知道吗你的圣子 Would one day walk on water 有一天会在水上行走 Mary did you know that your baby boy 玛丽你知道吗你的圣子 Would save our sons and d

发表于:2019-01-10 / 阅读(201) / 评论(0) 分类 2015最新精选英文歌曲

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(271) / 评论(0) 分类 VOA慢速英语2008年(八)月

From VOA Learning English, this is the Health Lifestyle report. Garlic is one of the most common cooking ingredients around the world. Many dishes in Europe, Africa, Asia and the Americas use this strong-flavored vegetable. Garlic is similar to other

发表于:2019-01-12 / 阅读(252) / 评论(0) 分类 2016年VOA慢速英语(十二)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(205) / 评论(0) 分类 2007年VOA标准英语(七月)

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(208) / 评论(0) 分类 2018年NPR美国国家公共电台7月

So awesome, right? Another example is Pentair. Pentair is a U.S. industrial conglomerate. 很棒,对吧?另一个例子是滨特尔。滨特尔是美国的工业集团。 And about a decade ago,they sold their core power tools business and reinve

发表于:2019-01-18 / 阅读(220) / 评论(0) 分类 TED演讲国际问题篇

Black Tongues and Stomach Aches Don: Oh, no, Ya?l, I think I'm having a medical emergency. Quick! Call an ambulance. Ya?l: A medical emergency, Don? Are you sure? You look fine to me! D: But I'm not. This morning, I had a terrible stomach ache. And n

发表于:2019-01-26 / 阅读(181) / 评论(0) 分类 英语听力文摘 English Digest

Sewage stinks. But bacteria can make it smell better. Oh, yeah? That's true. Certain forms of bacteria feasting on sewage give off hydrogen sulfide, a really malodorous chemical, and one of several that give sewage its pleasing smell. In general this

发表于:2019-01-26 / 阅读(187) / 评论(0) 分类 英语听力文摘 English Digest

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(194) / 评论(0) 分类 万物简史

与数字有关的英语词根总结 milli-【千分之一】例:milliampere(毫安)=milli(千)+ampere(安培) centi【百分之一】例:centimeter(厘米)=centi(百分之一)+meter(米) deci【十分之一】例:decibe

发表于:2019-02-06 / 阅读(305) / 评论(0) 分类 英语学习方法

用数学知识强化记忆 fourscore = four(4)score(20) 80 美国第16任总统林肯演说词第一句:fourscore and seven years ago, 那么,怎样才能记住 fourscore 这个词而终生不忘呢?只要我们了解了fourscore 的逻辑思维

发表于:2019-02-21 / 阅读(217) / 评论(0) 分类 实用英语

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(206) / 评论(0) 分类 英语听力文摘 English Digest

【大森】美国sing-off冠军Pentatonix最新纯人声超赞翻唱Calvin Harris和绵羊音Ellie Goulding热单《I Need Your Love》。人声合唱搭配五彩缤纷的mv剪辑,让人眼前眼花缭乱的同时身体也不禁随着节拍舞动起

发表于:2019-03-11 / 阅读(362) / 评论(0) 分类 好听的英文歌曲
学英语单词
68
agrotis
air blast moisture control
air qualitysurveillance
american coots
an argument from silence
anaphylactic reaction product
anty
assadollah
asymmetrical effect
barrier insulation
be attentive to
bedout
bitch party
charcoal wire
chronograph mechanism
citratase
clams up
complex inversinon
concentrated sulfuric acid
conservatrix
container
crude light solvent naphtha
curcumbitate
data mart server
decumulative frequency
dislocation vein
electric are furnace
embryotroph
emptyheaded
Enemion raddeanum
extruder rate
fern cushion
flat-bed machine
framing line
gastroboletus scabrosuss
gastrodermal
genus Phalanger
Gimbweiler
glycerin tripropionate
heptanoate
home of the brave
horseshoe flame furnace
illuminating arc
impressiones ligamenti costoclavicularis
invectivist
inversed
inverted drill string
jasson
jungvolk
linear block codes
lochheads
long standing problem
macro economic analysis
maneless
Mazarin Bible
meat formula
Mobile PC
mouldy-chaps
neutral lift line
Norn Iron
numerical password
octahedral satellite
orange-cream
outer-bottom expansion
pachydictyon coriaceum
Ponda
porites murrayensis
postcommute
pre-velars
presslie
property-ownings
Puruni R.
ramraidings
remote batch output file
rise-and-fall pendant
Saigon cassia
seaborne tracking and ranging station
shock resistance test
soil limnophagous animal
spec scripts
suboptimizations
support set
surface drainage system
teapot basket handbag
testbank
three range winding
time-between-overhaul life
trichomanes sublimbatum
Troyanska Planina
Trypaucheninae
Tyngsjö
Uruburetama, Sa.da
user microprogrammable system
vilipendious
viscosity manometer
volume stress
walrii
water chemistry
wearing through
wooly-haired
Yelovskiy Rayon