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(253) / 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(253) / 评论(0) 分类 2014年VOA慢速英语(四)月

Supreme Court Rules in Amistad Slave Ship Case 美国最高法院接管雅米斯泰德号奴隶船的案件 From VOA Learning English, welcome to The Making of a Nation a weekly program of American history for people learning American English. Im Ste

发表于:2019-01-12 / 阅读(251) / 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(207) / 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(290) / 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(281) / 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(273) / 评论(0) 分类 CCTV9英语新闻2014年01月
学英语单词
abnormal propagation
allylphosphine
alumina-magnesia brick
analytical characteristic
anaphase(strasburger 1884)
anorexia-cachexia syndrome
Apache pine
astrographic camera
automatic shut-down
Balūch Kalay
bar with ball and eye
beam bolster
berchemia racemosa magna
Biograph Company
boric spar
break the normal procedures
bronchial cast
brown wool
cargo boat note
celiac syndrome
circulation calculation
citriodorum
coherent substance
concave-die-drawing
cormel
corroborant food
current-carrying conductor
delta air lines
doktor
dual mode rocket engine
duplication method
ejector strap
factoress
failscade
floating car data
foot-slope
full protection policy
gastrothoracopagus dipygus
generalized approximant
genus raoulias
giantkiller
go on a spending spree
goverment
grading of aggregates
groundnut oils
hairy mole
haise
hassal
Hilgenroth
Himyaric
ho chi minh cities
Hockday
honor a cheque
hour counter hand
ilatov
improve performance
inulin
labo(u)r productivity of the entire body of industrial workers
laplanders
Link-Belt UP screen
meliola brachyodonta
microcitomas
minimums
monoclinate
morozov
new classical contract
New Zealand Labour Party
North Bourke
old women
Ophiopogon platyphyllus
ozonous
picopicogram
platinum chloride
polly fish
preoccipital notch,Incisura preoccipitalis
Racza Wielka (Vel'ka Rača)
Reconstructionist Judaism
record of cash disbursement
residing in
resolution of NMR spectroscope
rolling in pack form
roly-poly filly
round-robin scheduler
self-administered pension
separation negatives
single-plane (static) balancing machine
spiral curriculum
stss
superior joinery
susks-s
table of quality of locality
terms of reference
terra japonica
tricyclic antidepressant drugs
turn-over time
turquino
twentier
Ugba
Versonian cell
wareyne
warmaking
wlp