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(406) / 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(413) / 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(428) / 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(361) / 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(447) / 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(458) / 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(432) / 评论(0) 分类 CCTV9英语新闻2014年01月
学英语单词
alkyl magnesium bromide
allowest
Alxiling
arrest of ship
Arteria sublingualis
Australia
Australian External Territories
Bashan
boat screw
Briggsia rosthornii
buffalo jump
byte address
calefy
chloroplatinates
Chāh-e Rāh
client-baseds
coefficient of natural illumination
communicating branch with inferior laryngeal nerve
corrected pitch
correcting signal
Costa Verde
CPBV
crepe de laine
cumulative heat treatment
dangerous depth
decontextualising
density-functional
dial control
differentially
digital image
elandsrand
elastic wrinkle resistant fabric
endosporulations
equation of satellite motion
estromania
F.E.
festiva
Flynn classification schema
general survey of tumor
gronski
Hagedorn equation of state
hand -print
hexagon configuration
hormone immunoassay
IF switching
impugnment
in-vitro
infectious granuloma
Information Industry Association
injection timer
intraerythrocytic
irrecoverable loan
Kolybel'skoye
lend long
light percussion
Lili Marleen
lyricists
M.I.Mech.E.
Memecylon caeruleum
merserve
misaki
mode lock laser
muck transfer device of tbm
neotetrine
nominal size of pipe
notify
nuthin
offset distance/length
on-off transmission
paralyzation
Paungwa
persute
plant horns on someone
podp
population-employment sequence
process oil
propontocypris symmetrica
psychogenia
Red Cloud
redescribed
resilient gear drive
schyler
self-sustained chain reaction
sheet-mill stand
single level
six-square
smith
snatchingly
square mesh sieve
squaring down
stock adjustment demand function
sulfide titration
system hardening
tablet menu
taro pudding
technical control board
unconceited
visayan islandss
weird
wet-process enamelling
work miracles
XIP