寄生反应截面;有害吸收截面

Its five years old. 它五岁了 'Now remember boys and girls,' said the science teacher. 'You can tell a tree's age by counting the rings in a cross section. one ring for each year.' Tom went home for dinner and found they were having a jelly roll f

发表于:2018-12-18 / 阅读(131) / 评论(0) 分类 TED演讲国际问题篇

Amber: Hello, I'm Amber, and youre listening to bbclearningenglish.com. Today, since we are a website, we join in celebrations for the 15th birthday of the World Wide Web! The World Wide Web has changed the lifestyle and working environment of people

发表于:2018-12-28 / 阅读(169) / 评论(0) 分类 英语听和读

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Its good to be the Queen. You get fed and cared for and generally treated like royalty. But if youre a blue butterfly caterpillar, you can get the same b

发表于:2019-01-08 / 阅读(157) / 评论(0) 分类 Scientific American(二)月

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Shakespeare noted that a worm may eat a king, after that king is dead. Sadly, parasitic worms infect people who are still alive, especially kids. Publi

发表于:2019-01-08 / 阅读(171) / 评论(0) 分类 Scientific American(八)月

Fruit flies are pretty small. But they laugh at a species of fly recently discovered in Thailand. Dubbed Euryplatea nanaknihali, this member of the phorid fly family is less than half a millimeter longa fifth the size of a fruit fly. But before you o

发表于:2019-01-08 / 阅读(158) / 评论(0) 分类 Scientific American(七)月

This is Scientific American 60 second Science, I'm Cynthia Graber, got a minute? Were not the only animals that like to knock back the hard stuff. Studies have shown that some mammals seek out food and drink that naturally contains alcohol. And accor

发表于:2019-01-08 / 阅读(186) / 评论(0) 分类 Scientific American(二)月

面对面的交流就是 face to face,许多人认为这样的沟通效果和电话上或网上联系是不一样的。 例句 I've been in touch with my niece, who was born in South America, for years but we have never met face to face. One way of

发表于:2019-01-08 / 阅读(158) / 评论(0) 分类 英语日常口语

DEVELOPMENT REPORT – August 5, 2002: River Blindness By Jill Moss This is the VOA Special English Development Report. Doctors in Cameroon have found that giving the drug that fights river blindness

发表于:2019-01-11 / 阅读(143) / 评论(0) 分类 农业与发展

Researchers have developed a long-lasting capsule that, when swallowed, slowly releases medicine into the body. The researchers say the capsule was developed for treatment of the disease malaria. But they believe it could hold medicines for a number

发表于:2019-01-12 / 阅读(197) / 评论(0) 分类 2016年VOA慢速英语(十二)月

AS IT IS 2015-10-09 Belarus Writer Gets Nobel Literature Prize 白俄罗斯作家获得诺贝尔文学奖 Svetlana Alexievich of Belarus has won the Nobel Prize in Literature. The Nobel Prize committee in Stockholm, Sweden, called her writings a monu

发表于:2019-01-12 / 阅读(148) / 评论(0) 分类 2015年VOA慢速英语(十)月

By Carol Pearson Washington, D.C. 26 June 2007 Smallpox was the first infectious disease ever to be eradicated worldwide. But now, thanks to a two-decade campaign, guinea worm disease is about to be eradicated as well. Unlike smallpox, guinea worm di

发表于:2019-01-13 / 阅读(210) / 评论(0) 分类 2007年VOA标准英语(六月)

In the third millenium BCE, Mesopotamian kings recorded and interpreted their dreams on wax tablets. 公元前三千年,美索不达米亚国王在蜡质石板上记录并解释了他们的梦。 A thousand years later, Ancient Egyptians wrote a dr

发表于:2019-01-17 / 阅读(131) / 评论(0) 分类 TED演讲教育篇

-Howard: One of us, one of us. 入伙万岁!入伙万岁! -Penny: Well, what a thrill. thrill: 激动 多振奋人呀! -Sheldon: You're sitting in my spot. 你坐我位置上了。 -Penny: Oh, jeez, you've got to be kidding me. jeez: 呀 天呀,

发表于:2019-01-28 / 阅读(285) / 评论(0) 分类 生活大爆炸第二季

How they toiled and sweated to get the hay in! 收割牧草时,他们干得多卖力! But their efforts were rewarded, for the harvest was an even bigger success than they had hoped. 但他们的汗水并没有白流,因为这次丰收比他们先

发表于:2019-01-29 / 阅读(181) / 评论(0) 分类 动物农场 Animal Farm

Jan Andersson from the Nobel Prize Committee in Physiology or Medicine explained why Tu Youyou won the Nobel Prize. Youyou Tu got half of this year's prize for her discovery of Artemisinin, and she did that from an herb, so she was the one who identi

发表于:2019-02-04 / 阅读(140) / 评论(0) 分类 英语新闻

Pre-Listening Vocabulary observation: something that you see cross section: a view of the inside of something after a cut has been made across it hold true: remain a fact or truth even in other situations ideal: suitable sap: fluid (sugar and mineral

发表于:2019-02-08 / 阅读(381) / 评论(0) 分类 Facts-事实

所谓复杂的定语从句,是指一个句子带有两个或两个以上定语从句的结构。这类定语从句在结构上与先行词的关系比较复杂,有如下几种形式: 1.自由式定语从句 自由式定语从句是指一个句子

发表于:2019-02-09 / 阅读(165) / 评论(0) 分类 英语笔译

麦田怪圈不是我们干的。请用心想想吧。我们以你们认为不可能实现的速度飞行于群星间可你们还认为我们需要为了联络用途而压下麦秆?你们为什么还总是以为我们会在荒郊僻野着陆? 我们

发表于:2019-02-19 / 阅读(185) / 评论(0) 分类 英语美文

有人说过:得句型结构得托福阅读。在这篇文章里,托福小编将为大家介绍一些托福阅读句型的结构,考生在进行托福阅读复习时不妨将这些结构方法运用起来,可以加快托福阅读的复习效率

发表于:2019-02-25 / 阅读(144) / 评论(0) 分类 托福英语

一、英语句子结构的原则 1、谓动单一性原则 在一个句子里,有且只有一个谓语动词。 2、主句单一性原则 在一个句子中,有且只有一个主句。(从句可以有若干个) 二、三大从句 1、名词性从句

发表于:2019-03-13 / 阅读(569) / 评论(0) 分类 雅思英语
学英语单词
access name
accessoriser
al humaydah
Alamnagar
allevation
Automatic Route Management
Barsbek
battlestar
beta brass
biomarkers
black box warning
block push button
Celastrus aculeatus
centre-pieces
ceramics magnet
chivington
choke cable
clypeomorus humilis
come possum over someone
consciousness
control rise time
Cronin Lowe butter
crossed-field gun
debtor creditor relationship
decode procedure
dereferenced
disease mongering
dit-
documents against payment after sight
drake device
Duryea, Charles Edgar
dynamical condition
eager beaverism
fixed-length record file
galvano acupuncture
harpoon boat
high pressure mercury fluorescent lamp
high-pressure salesmanship
hughely
hungerfords
hypothetical diagram
impeller, impellor
in beijing
in someone's possession
ingirts
intuitive method
isagoges
J-code
kappamaki
kinkajous
level-term
lindskold
metasomosis
migmatitic front
miniatured
New Weird
non-self quenching counter
olive press
one to partial select ratio
organised
Pancake Tuesday
pearly razorfish
petty loss and profit
photoconversions
poles of opposite sign
polypyrenous
posterodorsolaterally
proinvesment
pseudo-edge
psi-weight
public accounts audit
rhodenbarr
rompered
ruffmans
said farewell
Sangnagwoldo
second guesses
secretist
short-wave diathermy
spitzers
stalagmometric
strategising
stress-induced leakage current
synodite
tape-recorder
tardiver
tolylsulfonyl
trim by bow
trithian
turnround of a ship
underwound
urinary
urobacterium
uterine serosa
vespa vivax
visual cut-off
Walian
whiteworks
wohlers
woo-mongers
writeable
ZPC