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(277) / 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(279) / 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(277) / 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(231) / 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(306) / 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(307) / 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(294) / 评论(0) 分类 CCTV9英语新闻2014年01月
学英语单词
adigal
andesite
animalesque
articulated traffic
auto-lumbomassage
avrich
baby flattop
ball socket
Balsapintada
berming
Betioky
Boolean complement
circular polarization antenna
clitoris tumor
cymbuliids
dialogic communication
diaphragma ventriculorum lateralium
directional listening
distolinguopulpal angle
dugong
Eldalat
electron hole
electrorefined copper
enlarged display
equivalent screw
feed producer
fine rate
first of same tenor and bate being unpaid
force lift
FPCON
full-cavitating propeller
gear finishing machine
gemels
genus actiniopteriss
George Armstrong Custer
gonj
gravel shelf
green value chain
HD DVR
homoneura (homoneura) quinquevttata
horney
hypocalcemia
inframicrobe
intraureteral cannula
isophthalic polyester resin
jatropha stimulosuss
John Millington Synge
karyopycnosis
Kendeng, Gunung
Kodino
Kristianstad
laissez-faire capitalism
lesion of bulbourethral glands
light water type power reactor
malted milk powder
mark-on percentage
markdown money
match filter
momentary high power effort
nationalmuseum
neopentanoic acid
nitrocellulose process
nonpraying
Norderstedt
nutrient uptake characteristics
oak-trees
ocotillos
open a file
oxypetalum
peristatic hyperemia
Petalostemon
Picea jezoensis
pullon
Pyrethrum tatsienense
quasi-left continuous
quinacrine
rauwolfine
regened
roosa oil
RQ-respiratory quotient
saliseparin
Salix limprichtii
schwerkraft
secure visual communications
self-depreciating
skhirats
smooth sth out
spittle-bug
statute books
support of communication interface
surface potential method
tethered
thallane
three wave process
truncated sample size sequential analysis
turnhams
ultracares
unassailabilities
vervens
vitrification(vitrifaction)
watchglass
wonderments