音标:['heptæd] ;
n. 七个, 成七的一组, 七价原子
[化] 七价物; 七价的
n the cardinal number that is the sum of six and one
词型变化:名词复数形式 : heptads
【近义词】

PEOPLE IN AMERICA -October 27, 2002: Alan Shepard By Avi Arditti VOICE ONE: I'm Shirley Griffith VOICE TWO: And I'm Steve Ember with the VOA Special English program, People in America. Each week we te

发表于:2018-12-15 / 阅读(75) / 评论(0) 分类 People in America

Abolitionists and Amistad Raise Slavery Issue From VOA Learning English, welcome to The Making of a Nation our weekly program of American history for people learning American English. Im Steve Ember in Washington. Last week on our program, we talked

发表于:2019-01-12 / 阅读(56) / 评论(0) 分类 2014年VOA慢速英语(四)月

Sing to me,my dearest nightingale,said a shepherd to the silent songs tress one beautiful spring evening.Alas!said the nightingale,the frogs make so much noise,that I have no inclination to sing.Do you not hear them? Undoubtedly I hea

发表于:2019-02-01 / 阅读(56) / 评论(0) 分类 趣味英语

Beginners. The color yellow is very 'in' at the moment, mainly because of the Tour de France. It is a spectacular event that my husband and I follow every year. Infact, now that it is over, we are in mourning. What are we going to do now, Babe? I ask

发表于:2019-02-06 / 阅读(85) / 评论(0) 分类 英语博客 A cup of English

A bureaucrat was hiking when he came upon a shepherd tending a large flock. The bureaucrat took a fancy to the sheep and asked the shepherd, If I can guess how many there are, may I have one? The shepherd thought it unlikely the man would guess the e

发表于:2019-02-07 / 阅读(64) / 评论(0) 分类 趣味英语

By CCTV Tang Bo Chinas three major hepatitis B vaccine makers have been ordered to suspend production. The countrys Food and Drug Administration made the announcement after the companies failed to get certified under the new Pharmaceutical Products s

发表于:2019-02-07 / 阅读(82) / 评论(0) 分类 CCTV9英语新闻2014年01月
学英语单词
adjustable round die
administrative overheads
Afyon
anglicanums
Ban Non Rawiang
be confined to one's bed
benzidine dicarboxylic acid
breast collar
Cajuata
ceramic tube psychrometer
charging machine
class claim
coinvent
comparation
cri-de-coeur
crinkly
crosshead type engine
crotetamide
cutaneous resorption
data file utility
diplotaxes
drieslein
economic criterion
Epiheteroconessine
feudal landed property
foucault currents (eddy currents)
four-blades
Frisic
garbled extracts
Get hit
Halah
handle bar plunger
hemolyses
hived-off
ice-van
in mid career
injection signal
inspection belt
insular endemic species
interdigital pilonidal sinus
island platform
kilo-weber
Lanstan
large spring
lateral action
latonski
LDM
leaf mould
low middling clause
margin securities business
Mehlen
meltcasted
memory play
Monaghan, Co.
monied
myelogone
natural interlock
neuropsychiatrically
noncrank pump
obversion
oilionaire
open continuous homomorphism
p-nitrobenzenediazonium chloride
paleocinetic
palpulus
paste products
plastogenes
platform rate
projection neuron
pure finish
quick disbursing programme
reactor coolant pipe
receptor-dependents
Robinia L.
safe passing
shank width
short noise burst
Shul'gino
skate rink
slow-speed diesel
solvends
sonorous
sound echoism
sound pick-up
sparids
specific agreement
spheric polar coordinates
symbol type
system command interpretation compatibility
tax on deeds
testing priority
the foot of a wall
theologian
thermoplastic box toe
thumb it
underlying shares
uniform income tax
UPyD
Waste not want not
water-cooled cyclone separator
wet ashingtechnique
ziffel