气体过滤管

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(70) / 评论(0) 分类 365个英语简短小故事

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(65) / 评论(0) 分类 2018年VOA慢速英语(一)月

Broadcast: Feb 13, 2003 Demand for electricity is growing in Mexico, but the state-owned oil company, known as Pemex, is reducing the amount of natural gas it can provide for electrical generation. Th

发表于:2019-01-03 / 阅读(72) / 评论(0) 分类 VOA2003(上)-国际时讯

Yvonne: This is 6 Minute English, I'm Yvonne Archer and Alice has kindly joined me for today's programme. Hello Alice. Alice: Hi Yvonne. Yvonne: Now Alice, how do you get around London? Alice: Ooh by bus, bicycle and usually the Tube. Yvonne: Aha, an

发表于:2019-01-07 / 阅读(96) / 评论(0) 分类 六分钟英语

BBC Learning English London Life Friendliness on the tube Yvonne:I'm Yvonne Archer and this is London Life from bbclearningenglish.com. Hello! In today's programme, we're talking about friendliness on London's tubes. Is there any? As you probably kn

发表于:2019-01-16 / 阅读(170) / 评论(0) 分类 伦敦生活

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(92) / 评论(0) 分类 2007年VOA标准英语(五月)
学英语单词
accelerating mechanism
acceleration charactristic
acetylgalactosaminylphosphotransferase
admissible function
anarchy
anteceded
aphis humuli
Aventis Pharma
Baitricinvial
bargee
BC mode
Bentox
bibeveled
buren
carbonising
cardinal shelf
Ch'orti'
CIGNA Corp.
collaterate
compound fraction
culture vessel
curtain rods
cyclochoroiditis
cytotoxicosis
d'unger
dedicatest
depot spare part
dominated
dynae
end plate nozzle
exuviae
fin fan exchanger
forecolours
gallobenzophenone
Gauribidanūr
Giovanni da Verrazano
gwaine
hepatozoon musculi
infective stricture of rectum
informees
ironclad distribution equipment
irreversible domain wall displacement
JMO
K-10
katukov
Lagrange's method of multipliers
lien on goods
liver-pancreas
magnetic optical laser
mcseveny
medogensis
middle line of wave height
mud cooling tower
Musset, Louis Charles Alfredde
narcissi
nature reserves
new fuel assembly transfer station
oceanogenic sedimentation
ontotheological
osmoadaptation
oxedrine tartrate
oxyproteic acid
Pars postlaminaris
passivator
past progressive
perceptive-motor performance
pine residue
planar cam
plant warfare
plexus rectalis caudalis
plutogogue
pneumatic adder-subtractor
pocket level
pockish
poor visibility
prosomas
reproducing needle
restrainers
rosemaled
Saparua
sciurids
septobasidiaceaes
sequence-types
siddurim
Silva, I.da
single particle distribution function
spherical disturbances term
square and rabbet
steel wire gauge
stons
subterranean animals
Tawara machine
teaching guide
the remnant of the endosperm
theory of games
tinderboxes
Utricularia forrestii
Vieux-Fort
water-bearing formation
waveguide radiator
Wintzenheim
zanthoxylum piasezkii maxim.