[化] 五溴化磷

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(61) / 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(59) / 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(63) / 评论(0) 分类 美国文化脱口秀

AGRICULTURE REPORT - Restrictions on Methyl Bromide By Mario Ritter Broadcast: Tuesday, March 16, 2004 This is Steve Ember with the VOA Special English Agriculture Report. Graphic Image Some chemicals

发表于:2019-01-06 / 阅读(130) / 评论(0) 分类 农业与发展

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(88) / 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(84) / 评论(0) 分类 2015最新精选英文歌曲

By Caty Weaver Broadcast: September 12, 2003 This is Bob Doughty with the VOA Special English Environment Report. Scientists in the United States have reported some good news about the 1)ozone in the

发表于:2019-01-11 / 阅读(99) / 评论(0) 分类 VOA2003(下)-环境与健康

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(104) / 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(95) / 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(82) / 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(78) / 评论(0) 分类 TED演讲国际问题篇

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(75) / 评论(0) 分类 万物简史

AGRICULTURE REPORT - Cover Crops By Mario Ritter Broadcast: Tuesday, March 23, 2004 This is Steve Ember with the VOA Special English Agriculture Report. The idea to grow a crop that improves the land

发表于:2019-01-30 / 阅读(100) / 评论(0) 分类 农业与发展

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(153) / 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(80) / 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(82) / 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(226) / 评论(0) 分类 好听的英文歌曲
学英语单词
3-Bromopyridine
ADHS (automatic digital handling system)
al-bakri
alien invasion
avong
balanced conditions
bimolecular film
Bothrophera
branchinectids
bulbomimic reflex
buried via
cargo and vessel surveys
chiliburgers
Cholepulvis
collutorium aluminis
colmore
combination steep twill
common carrier system
corner-to-corner
CP (constrained procedure)
Delaiah
Dolicaine
drive type oil cup
dwarf chinkapin oaks
earthed-cathode
earthenware coil
electropneumatic swithc
fatigue life index
fermentation tube
ferro-resonant computing
fighter pilot
forest coenology
fractal antennas
fried noodle with shredded pork
gallium(ii) sulfide
green tobacco sickness
gureghian
heart-sound transducer
heretoforetime
inherent floatability
input/output channel selection
JDST
juice scale
k0 method
Kasinovka
keysers
Kuragaty
Lactobacillus thermophilus
Ladormin
large calories
Leh District
Leitneria floridana
liliopsid genus
Lloyd's agent
maxilla nasal crest
McKeith
MP mode chain
needlessness
nicolaus copernicuss
nonchaotically
ohmic resistance
outdoor flowering plant
Overseas Transportation Office
overtrader
Paragonimus
perfact fungi
pipeline failure
plastic reinforcement
population pressure
premonitorily
prodelphic
productive set
Pupin
pupitre
Purnama
rolling balls
Salix mesnyi
scheduled cam
shore ice
shot-silks
silver lead ore concentrate
simulated sonic log
slumberness
solar patrol
Southern Indian L.
spelunked
stand-by compressor
switch lubricant
therapeutic schedule
thin skinned ingot
track-bolt
traffic mode
transmon
tropical forest
united states public health services
universal track gauge
unperson
urgent care centre
vestibulo-ocular tract
weinbergers
whore
wronglessly