[计] 反向滤波器

But the HEPA filter for Olivers Vibe got dirty very quickly. And, it was not cleanableit was simply replaceable. When it turned filthy brown, Oliver went back to Target to buy a new filter. Oddly, Target sold the F15 belt for the Vibe, but not the fi

发表于:2018-12-11 / 阅读(94) / 评论(0) 分类 365个英语简短小故事

作文和听力,阅读一样,可以早做准备。现在流行的复习方法是从下半年复习,甚至是考试前3个月才开始复习。复习的教材无一例外的是考试虫系列的万能作文:背一二十篇作文模式,背一二

发表于:2018-12-12 / 阅读(47) / 评论(0) 分类 英语学习方法

From VOA Learning English, this is the Health Lifestyle report. In parts of India, it is not uncommon to see people wearing a mask over their nose and mouth. The capital, New Delhi, has some of the world's dirtiest air. The pollution was a call for a

发表于:2019-01-03 / 阅读(89) / 评论(0) 分类 2018年VOA慢速英语(一)月

This is Scientific American's 60-Second Science. I'm Christie Nicholson . Got a minute? The lure of gambling clearly comes from the chance of winning. But how exciting is it to almost win? A study in the February 12th issue of the journal Neuron look

发表于:2019-01-08 / 阅读(104) / 评论(0) 分类 Scientific American(二)月

This is Scientific Americans 60-Second Science. Im Sophie Bushwick. Got a Minute? What's the best way to find out if an unknown mixture contains a specific substance, like an environmental contaminant? You could use an expensive, bulky gas chromatogr

发表于:2019-01-08 / 阅读(98) / 评论(0) 分类 Scientific American(八)月

在中国,普通话作为官方语言的地位日益巩固。然而在英国,为什么大多数的英国人不遵循标准的发音[standard pronunciation or RP(received pronunciation)],却喜欢操着一口地方口音呢?难道英国人不认

发表于:2019-01-11 / 阅读(69) / 评论(0) 分类 实用英语

Gold, Oil Prices Up as Investors Seek Safe Haven 投资者寻求避险:黄金、石油价格上涨 NEW YORK The up-and-down prices of oil and gold mirror the unsettled world situation, and both reflect the economic squeeze most nations currently face

发表于:2019-01-14 / 阅读(70) / 评论(0) 分类 VOA标准英语2016年(三月)

1. The work that Tim Pons and his colleagues published last week is basic research into the portion of the brain, the cortex, that one scientist says is responsible for all the interesting things we do. 剖析:在这个长句中, 共有两个定语从

发表于:2019-01-17 / 阅读(107) / 评论(0) 分类 雅思英语

Science and Technology Greenhouse-gas monitoring Not hot air 科技 温室气体监测 而非热空气 A new, private initiative should help show which gases come from where 一项新的私人倡议或许能够表明各种气体从何而来 IN 1955 a

发表于:2019-01-26 / 阅读(53) / 评论(0) 分类 经济学人科技系列

Books and Arts; Book Review;19th-century British politics;Third man; 文艺;书评;19世纪英国政坛;第三人; John Bright: Statesman, Orator, Agitator.By Bill Cash. 《约翰布莱特:政治家, 演说家, 改革推动者》;比尔凯西。

发表于:2019-01-26 / 阅读(66) / 评论(0) 分类 经济学人人物系列

Popular choices include, tea,coffee,cocoa. Popular: 流行的 cocoa: 可可 最受欢迎的有茶咖啡可可 I see. No,no,no,wait. Don't hang up yet. hang up: 挂断 了解了解别先别挂 What about a recreational activity? recreational activity:

发表于:2019-01-28 / 阅读(63) / 评论(0) 分类 生活大爆炸第二季

Quite what Halley expected to get from him when he made his unannounced visit in August 1684 we can only guess. But thanks to the later account of a Newton confidant, Abraham DeMoivre, we do have a record of one of science's most historic encounters:

发表于:2019-01-29 / 阅读(39) / 评论(0) 分类 万物简史

Hong Kongs first leveraged exchange traded funds have launched in a bid to tap Asian demand for structured products, even as western regulators are examining the mechanics of leveraged and other riskier forms of ETFs. 香港首批杠杆交易所交易基

发表于:2019-02-01 / 阅读(55) / 评论(0) 分类 英语新闻

By Tabinda Naeem Washington, D.C. 21 May 2007 Two years ago, the National Academy of Engineering established the Grainger Challenge Prize for Sustainability. This $1 million award was designed to challenge the world's scientists to develop a practica

发表于:2019-02-03 / 阅读(131) / 评论(0) 分类 2007年VOA标准英语(五月)

Heres one way to make sure you have perfect attendance in your class: 让你把全部注意力放在课堂上只有一种方法: Meet Pietro Boselli: Obviously, hes ridiculously good-looking. 来见见我们的彼得罗博塞利:看吧看吧,他真

发表于:2019-02-06 / 阅读(79) / 评论(0) 分类 阅读空间

You know how it goes: youre trying to talk to your grandchildren, but theyre constantly checking their beeping phones. Im listening . . . they insist. Except you know only too well theyre not. At home, over dinner, you want to catch up with your husb

发表于:2019-02-07 / 阅读(99) / 评论(0) 分类 阅读空间

和同事聊天时,她突然问我:当时,他是怎么向你求婚的,浪漫吗?我一愣,随即笑了:我老公是很木讷的人呢,你说会浪漫吗?虽然这样说,我心里却泛起甜丝丝的感觉来。他确实从来不浪漫,他的求婚没有

发表于:2019-02-18 / 阅读(80) / 评论(0) 分类 英语美文

Over the last 13 years, investors have experienced some of the largest financial bubbles in history. Asian currencies rose and fell, technology and Internet shares suffered staggering losses, oil and other commodities rode a wild roller coaster, and

发表于:2019-02-18 / 阅读(61) / 评论(0) 分类 阅读空间

一. 上升增长1.add up to 增加了eg. The total amount of added up to 14 billion pounds(14%) in 1994. 2. to jump to / to soar to 一跃达到/ 猛增到 eg. The total working days lost soared to 10 million in 1979. 3.an increase of ab

发表于:2019-02-18 / 阅读(89) / 评论(0) 分类 四六级写作指导

Law of Supply Demand: This is the founding block of economics. Whenever supply of something increases its price decreases and whenever supply decreases price increases. Thus, when you have excess production of corn, food prices decrease and vice vers

发表于:2019-02-25 / 阅读(74) / 评论(0) 分类 英文语法词汇
学英语单词
active-area
Amakusa-Shimo-shima
Amd.
Androsace rigida
ant-bears
appropriate to
arbor.
asterolecanium machili
astronomic parallel
atyrau (guryev)
bagatelle
Banneker, Benjamin
beyond sb's tehter
boomhauer
Bragg diffraction
brick facing
bromohyperhidrosis
caterpillar treads
cfat
Chloramoebaceae
computer-phobia
continentalise
cotidal
cross inn
curved buttress dam
decomps
difiore
disk backup
dislocation multiplication
Drypetes salicifolia
Efficient diversification
EI characteristic
elmaz
euproctis postfusca
fanconi-albertini-zellweger(syndrome)
field loop jumper
Fournier's treatment
fuel pit backwash water
genve
gig conveyer
graduate training scheme
gratification deprivation
Ichiki
industrial production
isotopic concentration
karling
law of lights
law of trichotomy
long path emitter
Masaya, L.de
measuring operation
Meknès, Prov.de
Meneng Dist.
miskitu
miss the target
Monkey Bay
Mordovian
NATO Joint Communications-Electronics Committee
Nīleh
occipital anchorage
octave band pressure level
oikiomania
omoo
one time and another
patchett
Physocarpus
pig heaven
Pompiloidea
post-trematic artery
profit before tax
pythium elongatum
Quinault L.
rate of capital return
ruckelshaus
safe-harbor
scale level
sedenes
self oiling
sequence file
shock wave interference
shortsyne
sigill
single-vehicle
skewerings
slice of array
snaring
spilliness
stembridge
strategic attack bombing
superior orbitals
surface board
swiss guards
sypers
That's all she wrote.
tremidine
tromping
type, instruction
U-Zr alloy
uncontrolled fashion
vanadium trichloride
wet gas
withhold business