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(173) / 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(185) / 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(166) / 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(169) / 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(225) / 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(186) / 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(193) / 评论(0) 分类 CCTV9英语新闻2014年01月
学英语单词
acetylcytidine
administration of estates act
aneroid valve
Anglo-Americanism
anti-authoritarianism
antiagricultural
bacterial concentration
be proxy for
bessaun
beyond recall
bomb container
bwe
cavegirl
cheese graters
composite roll
control class
creamcupss
delta model
dimetachlone
discrete location
Driscoll
driving up
Endau, Sungai
enghle
extremest
Faint heart never won fair lady
fallacity
Fasigin
first attribute
force of rolling friction
geohashing
gershuny
getting on someone's nerves
green sweat
gust alleviation factor
helicopter-gunship
homodynamous
host-host layer
in the abstract
in the pipeline
indegent
iris adaption
kaffiyeh
kicksorte
lexus
loading back
local celebrity
marginal transaction
Marquess of Queensbery rules
menno
microconcerns
microminiatur
mind-set
motorcycle petrol switch
mountain waste
natalie portman
non-Euclidean metric
nourishing yin to reduce pathogenic fire
oil grinding
our last summer
pacelli
phagolgsosome
Phospatidylcholine
phospho-2-dehydro-3-deoxygluconatealdolase
phosphorus dioxytrisulfide
plum-puddings
posterior pituitary substance
prentis
probeable
pulmonary resection
raiser
refresh address
resistance RAM
retarding moment
ring of expressions
s.marshall
scanning loss
second account
seek consolation in
semi-polar link
semiquantitate
Sierpinski sponge
special livestock formulation
statistical burst-correction
steady glass
stress equalizing
supernumerousness
tajfel
the powers of darkness
the public sector net cash requirement
tilias
tranquilization with heavy material
transition knuckle
tree snail
true cost of credit
unshaled
user-defined data type
visual analysis
waterproof ink
Watom I.
wave height correction
Zghartā