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
abyssal ooze
air relief shaft
al-masris
andor
anti-juvenile hormone
apeginin
average magner
Barbirolli, Sir John
bend weapons on/upon
blood system
boring life
butcher block
Carex lingii
cascade synchrotron
chamal
cone pepper
cope pattern
core reflooding
cost-cuttings
coupler response
current month percent
decontaminating solution
distributing roller
domed-head
dust feed mechanism
early warning system
electromagnetic vibration sand screen
explicit route
fan away
ferret-sized
flavour ester mixture
flowlessness
fracture of nasal bone
glycerophosphorylethanolamine
haematometer
hand-cuff
hexagonal socket wrench
Hidronal
homoisothermal
imperial weave
intermittent duty system
investment grant
ioxilhalamate
Jingle Bowels
keying by
Kuehneosauridao
last mask read-only memory
low rate silver zinc battery
mechanical facilities of irrigation and drainage
Medvedka
membranae quadrangularis
moly enamel
musicology
nalliah
near ultra-violet rays
nightride
no-go theorem
nondilutive
O.H.M.S.
odynacusis
open-work
order-disorder transformation
over-shoot rising-up time
Panurge
papilloma of bladder
pathetic fallacies
precision approach airfield radar
prevent from
pterocarpus santalinuss
Ramus pericardiacus
ravey
reden
remainderless
rom, read-only memory.
roquet
salivary glands
Scouse brow
scrub palmetto
sector search
short collar
silver Y
sion
sound signals buoy
soutirage
spin safe
strata granulosum cerebelli
subacute spongioform encephalopathy
super-noise
swimfins
syntaphilin
then-i
Third Council of Constantinople
toluene sulfon-chloride
trichosporiopsis spinigera(von honel)yamamoto
turgidities
Valhalla
video board
visceral skeleton
weaning on
whumel
wind tee
women-to-women