屏蔽阴极

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Batteries of the future need to deliver more energy, and they need to be smaller. Researchers at MIT think they have developed a technology that can, a

发表于:2019-01-08 / 阅读(226) / 评论(0) 分类 Scientific American(四)月

Participants at the United Nations Climate Change Conference in Cancun, Mexico are complaining about long delays amid heavy security. Some environmental activists say they are being kept well away from conference sites, and when a group tried to stag

发表于:2019-01-13 / 阅读(144) / 评论(0) 分类 VOA标准英语2010年(十二)月

It's hard to admit that I need help, but I do. For 45 days from the end of December to early February, I was in inpatient therapy receiving guidance for the issues I'm facing. I have a long way to go. But I've taken my first steps in the right direct

发表于:2019-01-18 / 阅读(230) / 评论(0) 分类 偶像励志英语演讲

电梯故障 Elevator Accident 本杰明下班回家,遇到了小小的电梯故障,他会因这次故障发表怎样的感慨呢?让我们来洗耳恭听吧! Listen Read Learn Benjamin: That was really a nightmare! Shirley: Honey, what's up? Benjamin: I was stuck between 15th and 16th flo

发表于:2019-01-21 / 阅读(169) / 评论(0) 分类 英语口语大赢家
学英语单词
49ers
4SGalNAc
a.pace
acute angle crank
adjoining pipe
advice of payment
ambrosiana
bachelor's degrees
ballast tamper
becurse
Blawenburg
boisseau
bounden duty
brushlikest
Bφmlo
calabazilla
cardial tuberculosis
cellular mobile telephone
charging chock
compensatory error
compole (commutating pole)
conical flasks
costoaxillary vein
cricket
cutting out disease wood
cyclical disequilibrium
cyclotoma formosana
d-glucose
dimension timber
episcopes
false reaction
far region
feedback-control
Fishlake
FNAA
formation of iron
frank-tenementary
fuenterrabia
general purpose lines of overhead
genus Plasmodiophora
george santayana
hololaser
hudnas
Ilex formosana
jump leads
Kabaena, Selat
Lenggor, Sungai
light oil distillate
low income bracket
medial cord
mesovelia japonica
miniatured
Mordva
motor closing mechanism
multivariate beta distribution
Nabidrox
Nis(Nish)
noiselike signal
overdraft on bank
parenetic
pea type
pentnucleotide
perakensis
Plinian eruption
prick point
primitive form
prosartema
pseudopinene
pyrogram
Qara Qum
quadrati
quadruplicates
reduction percentage
rotating band
sacrement
sarco
seed bed preparation
self exciter
shortage of fresh water
Sloanea chingiana
sodium beryllium fluoride
soligen
space recording
special chemical tanker
Sporogelite
standard free energy of bond
stopper end
sub-
super-saline
symbolic programme
tanite
taxi yellow
thermally indirect circulation
thiazolone
tourettes
tourist submersible
travel bug
under-employment
vells
vibration node
vile actions
wound-up company