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(291) / 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(296) / 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(296) / 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(239) / 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(325) / 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(325) / 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(312) / 评论(0) 分类 CCTV9英语新闻2014年01月
学英语单词
amcbic intestinal perforation
amplitude-quantizing
amyl acetate-iso
antithetic fault
be bare of
beam transmission
beamsplitter holder
Becodisks
Bessel function of the second kind
bipolar format
Bragg-Paul respirator
canham
check-valve lever spring
cheesewrings
clover meal
commercial machine
component gallery
compression gland
comptographs
condrodite
consertal
corlu suyu
CPU chip circuit
creeping charlies
crockpots
crusadist
current subsidies
de bonis non administratis
diaphragm-type power brake
dry adiabatic warming
Ekenässjön
elastic layer
environmental engineering consulting
exchange rate depreciation
fault block basin
film distribution corporation
flashed glass
general budget
Genoa cake
Gillies
gluteus mediuss
Halosaccion
hapagin
high-frequency pipe bending machine
horizontal emittance
hypothetico-deductively
i.c.j
ice age aridity
identificable
index documents
jackbird
JCSC
Lachung Chu
large aperture optical system
Lavumisa
lead-base bearing alloy
lime-grout
Lithospermum officinale L.
luggage compartment door
lunville
macrophagy
magneto telephone switchboard
malaxators
multiple pumping
neburea
Nevado, Cerro
nikolai vasilievich gogols
noncombat
nonpsychical
nonstored
piecemeal learning
positive displacement stuffer
poyntzs
qatra
RAG (report program generator)
renounce the pen for the sword
retail network
retaxed
rocking grating
rollover loan
rowanberrys
salesite
Savara
Scotland encephalitis
shad frog
shunt resistance
skin sensitizing antibody
sorry-mood
stanchion barn
station-wagons
statistical models
steel balls
straight-tooth bevel gear
streict
tahari
trasses
tunnel adit
ultrasonic image logging
upright dial gage
vena medialis atrii
webliographies
ycontined