2-胺-1-羟蒽醌;茜素胺

AA: I'm Avi Arditti with Rosanne Skirble, and this week on Wordmaster -- English teacher Lida Baker joins us from Los Angeles to talk about phrasal verbs. The first word is a verb. The second word, sometimes even a third, is usually a preposition. Ph

发表于:2018-12-04 / 阅读(79) / 评论(0) 分类 词汇大师(Wordmaster)

The Ant and the Dove An ant went to the bank of a river to quench its thirst, and being carried away by the rush of the stream, was on the point of drowning. A Dove sitting on a tree overhanging the w

发表于:2018-12-05 / 阅读(113) / 评论(0) 分类 创世记

The Ant and the Grasshopper In a field one summer's day a Grasshopper was hopping about, chirping and singing to its heart's content. An Ant passed by, bearing along with great toil an ear of corn he

发表于:2018-12-05 / 阅读(138) / 评论(0) 分类 创世记

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. As Valentines day approaches, remember, its the thought that counts. Just ask a decorated cricket. Because according to a study published in the January

发表于:2018-12-24 / 阅读(96) / 评论(0) 分类 Scientific American(一)月

AA: I'm Avi Arditti with Rosanne Skirble, and this week on Wordmaster -- English teacher Lida Baker joins us from Los Angeles to talk about phrasal verbs. RS: The first word is a verb. The second word, sometimes even a third, is usually a preposition

发表于:2018-12-30 / 阅读(109) / 评论(0) 分类 词汇大师(Wordmaster)

Grammar Girl here. Today, guest-writer Bonnie Trenga helps us understand modifiers that come at the beginning of a sentence. Bonnie says, As a guest-writer, I plan to talk about two kinds of troublesome modifiers that begin a sentence. Like many of y

发表于:2019-01-02 / 阅读(107) / 评论(0) 分类 英语语法 Grammar Girl

Grammar Girl here. Listen up, everyone! Todays topic is phrasal verbs, as in to listen up. And now, guest-writer Bonnie Trenga writes, a listener, Paulino from Minneapolis, would like to know what phrasal verbs are and why they are called that. Phras

发表于:2019-01-02 / 阅读(136) / 评论(0) 分类 英语语法 Grammar Girl

发表于:2019-01-03 / 阅读(77) / 评论(0) 分类 医务英语

Humulone 律草酮 Huperzine Serrate P.E 千层塔提取物 Hydroginkgolic acid 氢化白果酸 Hydroginkgolinic acid 氢化白果亚酸 p-Hydroxyacetophenone 对羟基苯乙酮 p-Hydroxybenzylalcohol

发表于:2019-01-03 / 阅读(90) / 评论(0) 分类 医务英语

After you have greeted your guests, you will begin to go through the main body of your presentation. It's very useful to have some visual aids - some slides, pictures or graphs that help explain what you are saying. Sometimes they can also help to k

发表于:2019-01-07 / 阅读(353) / 评论(0) 分类 英语讨论

Researchers Say Malaria Drug Could Also Treat Cancer Scientists know that human cancer cells grow by getting energy from adjacent tumors, where cells have begun to self-destruct. The spread of cancer is accelerated by the death of these cells. This p

发表于:2019-01-13 / 阅读(120) / 评论(0) 分类 VOA标准英语2012年(三月)

An ant once leaned too far over the edge of a fountain and fell in-to the water.A dove was watching from a tree nearby.She saw that the ant could not swim so she plucked off a leaf and threw it down to him.He managed to scramble onto it and in

发表于:2019-01-26 / 阅读(153) / 评论(0) 分类 趣味英语

One cold,frosty day in the middle of winter a colony of ants was busy drying out some grains of corn which had grown damp during the wet autumn weather.A grasshopper,half dead with cold and hunger,came up to one of the ants.Please give me a

发表于:2019-01-26 / 阅读(180) / 评论(0) 分类 趣味英语

Science and technology 科学技术 Creutzfeldt-Jakob disease 克雅氏病 Breaking down the barrier 攻破屏障 A glimmer of hope for a drug that treats disease caused by prions 药物治疗朊病毒感染疾病的一线希望 THE epidemic of mad-c

发表于:2019-01-26 / 阅读(142) / 评论(0) 分类 经济学人科技系列

Science and Technology Creutzfeldt-Jakob disease Breaking down the barrier 科技 克雅氏病 攻破屏障 A glimmer of hope for a drug that treats disease caused by prions 药物治疗朊病毒感染疾病的一线希望 THE epidemic of mad-cow dis

发表于:2019-01-26 / 阅读(123) / 评论(0) 分类 经济学人科技系列

By Cynthia Kirk ENVIRONMENT REPORT -May 31, 2002: Coqui Frogs Invade Hawaii This is the VOA Special English ENVIRONMENT REPORT. Experts say the American state of Hawaii has been invaded by a small fro

发表于:2019-01-28 / 阅读(114) / 评论(0) 分类 健康与环境

In January 2015, a fire in one of Russia's largest university libraries damaged more than 1 million historical documents, an incident which some media described as a cultural Chernobyl. 2015年1月,俄罗斯最大的大学图书馆之一发生了火灾

发表于:2019-02-02 / 阅读(87) / 评论(0) 分类 英语新闻

Zahra' Langhi 曾是利比亚愤怒日运动的一员。愤怒日运动有助于推翻卡扎菲专制政府,然而利比亚之后又该何去何从呢?在利比亚的第一次大选中,人们尝试创新了候选人名单交叉式候选人名单,

发表于:2019-02-05 / 阅读(82) / 评论(0) 分类 TED公开课:世界权势大转移

An ant and a fly were contending heatedly who was of greater importance.The fly was the first to begin:Can you possibly compare with my endowments?When a sacrifice is made,I am the first to taste the entrails that belong to the Gods.I pass

发表于:2019-02-06 / 阅读(182) / 评论(0) 分类 趣味英语

Eating a small steak every day could be as good for you as stopping smoking, scientists say. 科学家说,每天吃一小块牛排可以像戒烟一样对你有好处。 People who eat lots of protein-rich food were found to have lower blood pressu

发表于:2019-02-18 / 阅读(337) / 评论(0) 分类 阅读空间
学英语单词
acutangulate
almand
alnusenone
anticross
apertura thoracis inferior
Ateleopodiformes
Ban Bo Si Songkhram
Bihoro
binary-decimal notation
bodily tide
Broussonetia kurzii
byte-oriented protocol
cavalcaded
Centroscymnus
chain moulding
cochromatographic
cod oil
code disc rotational speed sender
colonial rule
commuting matrices
conical combustion chamber
control line model
cut somebody off
digital video server
dissipation layer
edge table
Einarson's gallocyanin chrome alum method
Elopiformes
exchange of negotiable instrument
fungoid myeloidosis
gandaritis sinicaria postalba
gastrocnemii
get into a mess
gogi (kogi)
gushfest
high-magnesian calcite
high-valuation
homeomorphic graph
hydro-flow technique
Hypericum hirsutum
interior breakwater
international hydrological decade
iron deficiency of rice chlorosis
irritative hypertrichosis
jacobsen
jiffing
lewisite
linear tariff cut
lower bosh line
meprothixol
mixed garden style
molinet
mounted tool
multilevel operation
multiple line reading
no-motor
non-dairy cream
noumenal
ossifying diathesis
ostium abdominale tubae uterinae
pastina
payroll form
percentage of trunking
perfect optics
phase insulated terminal box
physiological conditions
pillaus
pitch block
poly-d-lysine
Portville
power transistor module
prefabricated house
printer buffers
profession Arbel
Puente del Congosto
ribuck
sea-bat
semiconductor time-lag relay
significant positive correlation
slack of rodding
slae
slump bedding
smoldering crisis
spicated
spice sth up
square-root law
stab form granulocyte
stage sling slip knot
strapworks
summer
t'ai chi chuan
Telem
thermostated bath
throtting governor
transit visas
transverse optical modulator
turbulence
vasodilatatoria
wall heater
wall-side ship
YscC