二阶中心矩

Lesson 52: A pretty carpet 漂亮的地毯 First listen and then answer the question. 听录音,然后回答以下问题。 What is the writer's carpet made of? We have just moved into a new house and I have been working hard all morning. I have bee

发表于:2018-12-08 / 阅读(313) / 评论(0) 分类 新概念英语第二册

The smog is expected to completely disperse on Wednesday as a strong cold front will hit the region. Zhang Linna is the Chief reporter of the Central Meteorological Station The new front cold will strengthen the north wind. Then, the lingering smog w

发表于:2018-12-20 / 阅读(133) / 评论(0) 分类 2016CRI中国国际广播电台

A: Waiter, please. 服务员。 B: Yes? 请问有什么能帮您? A: Could you bring me some hot water? 给我一些热水吗? B: OK, wait for a moment. 好的,请稍等片刻。 A: Waiter, can you come here for a moment? 服务员,能过来一

发表于:2018-12-26 / 阅读(121) / 评论(0) 分类 旅游英语口语情景对话

About Stock 关于库存S: salesclerk 售货职员 C: customer 顾客实用句型 Practical Key SentencesS64: Not many stocks left. But the goods will arrive till tomorrow. 库存不多了,不过明天新货就到。 S65: Just a moment, please. I'l

发表于:2018-12-26 / 阅读(111) / 评论(0) 分类 外贸服装口语

Orderamp;Quantity下单及数量S: Salesclerk 售货职员 C: Customer 顾客实用句型 Practical Key SentencesS14: We have no profit this time, just help you. Hope you come next time. 这次没赚钱,只是帮帮你,希望你下次再来。 S1

发表于:2018-12-26 / 阅读(114) / 评论(0) 分类 外贸服装口语

Waiter: Are you ready to order yet, sir? 服务生:先生,您点菜吗? Tom: Yes, I think so. Id like to have one medium steak, and a bottle of wine. 汤姆:是的。我要一份半熟的牛排,和一瓶红酒。 Waiter: Yes, sir. Itll be a

发表于:2018-12-26 / 阅读(115) / 评论(0) 分类 天天练口语

图片1 voluntary adj. 自愿的,主动的,故意的,志愿的,自发的 例句:Joe is very taken up with voluntary work at the moment. 乔目前大部分时间和精力都用在志愿工作上了。 volunteer n. 志愿者,志愿兵 adj. 志

发表于:2018-12-30 / 阅读(141) / 评论(0) 分类 漫画搞定六级词汇(文本+音频)

ECONOMICS REPORT - U.S. Central Banker Alan Greenspan Prepares to Retire By Mario Ritter Broadcast: Friday, November 18, 2005 I'm Steve Ember with the VOA Special English Economics Report. The chairma

发表于:2019-01-02 / 阅读(145) / 评论(0) 分类 健康与经济

LOS ANGELES Nael Zaino will do anything for his almost 2-year-old son, Aram, whom he has hardly had a chance to meet. When I saw him first time, he was crying and the bad moment was when he refused to come to me. Maybe hes punishing me why I was abse

发表于:2019-01-03 / 阅读(166) / 评论(0) 分类 VOA标准英语2017年(三月)

A rush order 紧急定货 A: Our usual supplier has let us down and Ive been looking through your parts catalogue. I need fifty GT670s. How soon can you deliver? A:我们经常供货商让我们失望,我在看贵方的配件目录。我需要五十件

发表于:2019-01-14 / 阅读(117) / 评论(0) 分类 职业技术英语口语

A: I really needed the supplies today and you are telling me you don't have them? B: The supplier said that it will be a few more days until they can ship the order. A: Fine, what day will the whole order be here? B: If we are lucky, they may get her

发表于:2019-01-15 / 阅读(150) / 评论(0) 分类 英语情景对话-工作

高考英语作文的一些实用技巧 (一)掌握技巧: (1)注意篇章结构,合理布局 开始部分(opening paragraph)说出文中的要点、核心问题。 正文部分(Body paragraphs)围绕主题开展叙述、讨论。 结尾部分(co

发表于:2019-01-17 / 阅读(176) / 评论(0) 分类 英语作文

unit 239 西餐点菜(7) dialogue 英语情景对话 A:Waiter, show me the menu, please. A:服务员,请把菜单给我看一下。 B:Yes, here you are Would you care to order now, Sir? B:给您,先生,现在点菜吗? A:I'll have the bak

发表于:2019-01-21 / 阅读(222) / 评论(0) 分类 高频英语口语对话

By Barbara Schoetzau New York 29 February 2008 The United Nations is asking for $32 million in immediate humanitarian aid for the Central African Republic (CAR). The UN's humanitarian coordinator, Toby Lanzer, says the aid will help stabilize a volat

发表于:2019-01-31 / 阅读(151) / 评论(0) 分类 VOA常速英语2008年(二月)

By Navbahor Imamova Washington 16 November 2007 In most of Central Asia women are still struggling to find their place in the political arena. Despite the Soviet legacy of gender equality, women are still underrepresented in the highest levels of gov

发表于:2019-02-02 / 阅读(178) / 评论(0) 分类 VOA常速英语2007年(十一月)

break out 突然发、,爆发at the moment现在、此刻 break through 突破for a moment 片刻、一会儿 break up 终止、结束、打碎、for the moment 现在、暂时 catch ones breath 屏息in a moment 立刻、马上 out of breath喘不过起

发表于:2019-02-05 / 阅读(137) / 评论(0) 分类 考研英语

LONDON, Jan. 16 (Xinhua) -- Two people were killed and another two were injured after a helicopter crashed into a construction crane near Wandsworth Road, south of River Thames in central London earlier on Wednesday. Two people confirmed dead at scen

发表于:2019-02-08 / 阅读(170) / 评论(0) 分类 英语新闻

CHANGSHA, July 5 (Xinhua) -- A section of a highway running near a major river in central China's Hunan Province caved in early Thursday, engulfing a passing vehicle and killing at least one person aboard. The cave-in, near the Poly International Pla

发表于:2019-02-17 / 阅读(166) / 评论(0) 分类 英语新闻

模仿文本: We begin with a look at the latest international response to the brutal violence in the Central African Republic. The United Nations Security Council has voted to approve a new 12,000 strong peacekeeping force in the country. African

发表于:2019-02-21 / 阅读(147) / 评论(0) 分类 英音模仿秀

常见介词+名词/代词短语 as a matter of fact 其实,事实 as a result结果,因此 as a rule通常 at a time 每次,一次 at all events 无论如何 at any rate无论如何,至少 at first sight 乍一看,初看起来 at first起初

发表于:2019-02-25 / 阅读(161) / 评论(0) 分类 英文语法词汇
学英语单词
amplitude comparison monopulse
annuity deferred
anodicoxidation treatment
anoxic pore water
aromatic spray
attolux
average productive capacity
Barn B.
bauson
be warm in someone's praise
bipartite wagering
bombarding charge
brine floatation
capr-
cathecolaminergic
cinnabar chanterelles
Clythiidae
conference house
daiheng
date entered practice
daughter-herdmate comparison
documentary bill of exchange
double - fold eyelids
durosarcoma
emplastra plumbi in massa
equiponderation
European-Siberian floristic subregion
extension of endomorphism
fillowite
fledglings
freelander
glaphyra concolor
gostkowski
gum silk
hallux rigidus
high ambient temperature alarm
high power factor ballast
hub-to-rim fairing
hubermen
hydatidaystis
kyrios
L-HCA
leave out of reckoning
Lengerich
lift-off effect
Lochgair
magic point
Manicole
materials consumption norm
Maurer's dots
memory-centered processor
meningiomas
microgensis
micromelic fetus
minihydro
mistread
n-nonylic acid
net available assets
nitrifaction
oedema
organismal theory
overfish
painted sandgrouse
pamprodactylous
panticainide
passage for heat transfer medium
point of reverse curve
potential client
princes-of-wales feather
pulpit spectacles
pusher autogiro
putta
rated operating voltage
redus
remeasuring
resolutative
reunderstand
root of a central tube
rudderhead
run the danger of
scapements
sell short
single-subject
sovranty
squaring tool
stop mortise
sub-agents
supercooled liquid
tajines
telesmatically
testing expense
Toluifera balsamum L.
tongatapus
tons of fuel per locomotive kilometre
unabsolve
urban park
vinyl foils
viscosity of latex
voltaic batteries
wissard
wooden-head
WSAN