un. 无偏总体方差
[网络] 总体变异无偏估计

2010年ESL之餐饮娱乐 13 Liberal and Conservative News

13 Liberal and Conservative News GLOSSARY rag a poor-quality, unimportant newspaper * Hennah writes for the local rag, but she dreams of becoming a reporter for anational newspaper. news coverage the stories and events that are discussed in a newspap

发表于:2018-12-03 / 阅读(85) / 评论(0)

2010年ESL之餐饮娱乐

听电影学英语-天气预报员 10

[0-1:59.18]Do you know that the harder thing to do and the right thing to do... 你知不知道：难做的事和应该做的事．．． [00:04.98]are usually the same thing? 往往是同一件事？ [00:07.98]Nothing that has meaning is easy. 凡是有

发表于:2018-12-07 / 阅读(95) / 评论(0)

听电影学英语-天气预报员

听电影学英语-天气预报员 13

[00:06.86]We'll let you know. 我们会通知你的 [00:26.98]-Russ is here. -Okay. -拉斯在这儿 -好 [00:29.74]-Where's Mike? -lnside. -迈克呢？ -在里面 [00:38.90]-Dave. -Hi, Russ. -戴维 -嗨，拉斯 [00:39.70]He's upstairs. He's still

发表于:2018-12-07 / 阅读(142) / 评论(0)

听电影学英语-天气预报员

数学英语 41 What are Statistics and Estimators?

by Jason Marshall Sometimes statistics* seems magical. Of course, there isnt really anything magical going onbut the fact that statistical methods can be used to pull useful information out of a hatful of messy data is, at a minimum, remarkable. And,

发表于:2018-12-07 / 阅读(103) / 评论(0)

数学英语

【突破英文词汇】有关disagreement“不一致”的词汇(2/2)

1. antagonize /n'tɡənaɪz/ vt. 对立 The official antagonized the leader of his own party by accusing him of cowardice. 那位官员谴责自己党内的领导人怯懦，与他产生敌对。 2. dissent /dɪ'sent/ vi. 反对 The vote approving th

发表于:2018-12-30 / 阅读(111) / 评论(0)

突破英文词汇

英语四级同形异义词辨析10

英语四级同形异义词辨析10 第一单元复习 1. Dont this news to the public until we give you the go-ahead A) release B) relieve C) relate D) retain 2. We are interested in the weather because it us so directly what we wear, what we do, an

发表于:2019-01-03 / 阅读(58) / 评论(0)

四六级词汇与结构练习

英语四级同形异义词辨析01

英语四级同形异义词辨析01 第一单元复习 1. Dont this news to the public until we give you the go-ahead A) release B) relieve C) relate D) retain 2. We are interested in the weather because it us so directly what we wear, what we do, an

发表于:2019-01-03 / 阅读(59) / 评论(0)

四六级词汇与结构练习

常见阅读理解作者态度的词汇

在英语四级阅读理解题目中，常有考察作者态度的题目，大致可以分为以下几类，供大家来做下参考：积极： approval 赞成，承认 approving 满意的 concerned 关心的，重视的 confident 自信的，确信的 complimentary 赞美的 impartial 全面的，公正的 objective 客观的 o

发表于:2019-01-08 / 阅读(80) / 评论(0)

大学四六级阅读

绿箭侠第一季第45期:火车道上的审问

I've got one question. 我有个问题 Why am I being fired? 我为什么被解雇了 Ms. Smoke, isn't it? Yes. 你是斯莫克小姐，对吗，是我 And I am without a doubt 我毫无疑问是 the single most valuable member of your technical divi

发表于:2019-01-29 / 阅读(77) / 评论(0)

绿箭侠第一季

2007年VOA标准英语-India Lowers Estimate of HIV, AIDS Infections

By Steve Herman New Delhi 17 August 2007 India was once thought to have the world's highest number of people with HIV -- the virus that causes AIDS. But the estimate was recently reduced by more than half -- down to 2.5 million from 5.7 million. The

发表于:2019-01-30 / 阅读(134) / 评论(0)

2007年VOA标准英语（八月）

2007年VOA标准英语-Intelligence Estimate Says al-Qaida Intends to

By Gary Thomas Washington 17 July 2007 A new U.S. intelligence estimate says al-Qaida remains determined to mount attacks on major targets in the United States, especially if it can acquire weapons of mass destruction. VOA correspondent Gary Thomas r

发表于:2019-01-30 / 阅读(126) / 评论(0)

2007年VOA标准英语（七月）

VOA慢速英语20061021a

IN THE NEWS - Immigrants, Births Put US on Way to Population of 400 Million by 2043By Brianna Blake Broadcast: Saturday, October 21, 2006 This is IN THE NEWS in VOA Special English. This week, the nat

发表于:2019-01-30 / 阅读(76) / 评论(0)

2006年慢速英语（十）月

How to Safeguard Your Income

How to Safeguard Your Income Im a big believer in diversification. Putting all your eggs in one basket is dangerous, especially in your personal finance. Diversification is a good way to reduce your risks. The question is how we should go about diver

发表于:2019-01-31 / 阅读(128) / 评论(0)

阅读空间

学个词Learn a Word 第1244期 trait

今天我们要学的词是trait。 Trait, 特征。 A new study in South Korea shows that 1 in 38 children have traits of autism, 韩国一项最新研究显示，每38个孩子里就有一个孩子带有自闭症的特征。 Two-thirds of the child

发表于:2019-02-02 / 阅读(56) / 评论(0)

英语单词荟萃

我国29省份出台户籍改革方案部分地区放宽落户条件

The reform of the housing registration, or hukou system, has been under way in most regions in China following the State Council's call to establish a unified household registration system for urban and rural residents in a document issued in 2014. 继

发表于:2019-02-03 / 阅读(61) / 评论(0)

英语新闻

经济学人259:直到死神将我们分开

Science and technology 科学技术 HIV and AIDS 人体免疫缺陷病毒和获得性免疫缺陷综合征 Till death do us part 直到死神将我们分开 Putting numbers on infidelity 细数出轨之罪 ONE of the problems of dealing with a sexual

发表于:2019-02-05 / 阅读(96) / 评论(0)

经济学人科技系列

统计学名词英语单词

统计学名词英语单词 population 母体 sample 样本 census 普查 sampling 抽样 quantitative 量的 qualitative/categorical 质的 discrete 离散的 continuous 连续的 population parameters 母体参数 sample statistics 样本统计量 descriptive statistics 叙述统计学 i

发表于:2019-02-06 / 阅读(108) / 评论(0)

英文语法词汇

浅谈GRE作文怎样写句子

我原来曾经给我的一个同学改作文，发现她经常写一些让我感觉哭笑不得的句子。例如： At the first glance， the argument seems sound， but with a further look， I find it problematic. 前半句是忠实引用，后半

发表于:2019-02-09 / 阅读(100) / 评论(0)

GRE作文

【英语趣味课堂】他和他的狗-He and His Dog

Todd: Hey, Greg, you got a great dog. Where did you get your dog? Greg: Actually, my dog and I sort of found each other. I was moving from one house to another and as I was moving from the parking lot to my house, I saw this really skinny dog that lo

发表于:2019-02-24 / 阅读(108) / 评论(0)

英语趣味课堂

留美老师带你每日说英文第807期:极度害怕上台演讲

台湾籍旅美老师今天交给我们的句子是： Okay, if this sounds like your worst nightmare, you're not alone. Actually, you are one of the estimated seventy percent of the population that has an intense fear of public speaking. 好的！如果

发表于:2019-03-04 / 阅读(113) / 评论(0)

留美老师带你每日说英文

最新学习文章

热门学习文章

热门标签

英语听力 VOA标准英语 VOA 英语歌曲口语听力提高听力材料听力教程英语学习 NPR 英语口语 VOA慢速英语美国国家电台儿童英语 VOA英语小学英语 cnn VOA常速英语标准英语英文歌曲听电影学英语英语单词英文电影慢速英语 CRI 美联社新闻美国有线新闻加州分级澳洲新闻流行歌曲常速英语 ABC新闻快递疯狂英语英语读物听力棚车少年经济学人英语词汇商务英语 VOA双语新闻 BBC 中国电台大学英语 Treasures 加州语文 BBC英语英语听力网站 VOA英语教学词汇万花筒 SSS VOA英语听力 AP 新概念分级英语英语广播听力精选英语播客英文绘本 TED演讲赖世雄英语MP3 CCTV9英语新闻 lesson 英语新闻初中英语学英语英语语法历史上的今天英文广播剧英语游戏原版英语小说英语有声读物书虫英语牛津英语读物访谈录新闻一分钟考研英语英语每日在线听新闻 Us 新概念英语地道英语单词第二册自然百科高中英语 sports 实用英语 MP3听力辛沛沛 ESL英语第一册英语每日一句 unit 新东方 GRE 每日一词 BBC听力

学英语单词

Aebeltoft

angioneurotic skin-disease

antenna electromotive force