un. 随机效应
[网络] 随机效果；随机效应模型

Placebo Effect Update

By Nancy Steinbach Broadcast: November 19, 2003 This is Phoebe Zimmermann with the VOA Special English Health Report. When scientists want to test the effectiveness of a new drug, they usually divide

发表于:2018-12-15 / 阅读(224) / 评论(0)

VOA2003（下）-环境与健康

Belief in Cause and Effect

Benjamin Frankin wondered about(at) lightning. He combined his curiosity with imagination and carried out his well-known experiment to show that lightning and an electric spark are the same thing. Cur

发表于:2018-12-30 / 阅读(391) / 评论(0)

自考英语（一）78讲

英语沙龙:Random Thoughts-Party

Random1) Thoughts-Party Last night,pressured by well－intentioned friends,for the first time in months,I came out of writers seclusion and attended a cocktail party which is another word for a social gathering.So there I was,trapped in a crowded roo

发表于:2019-01-01 / 阅读(297) / 评论(0)

英语沙龙

Random acts of kindness

Jennifer: Hello and a very warm and friendly welcome to the first 6 Minute English of 2013. My name is Jennifer and with me in the studio for today's programme is Callum. Happy New Year! Callum: Hi Jen - happy New Year! Jennifer: Have you made any Ne

发表于:2019-01-07 / 阅读(306) / 评论(0)

六分钟英语

SSS 2008-08-08

This is Scientific Americans 60-Second Science. Im Steve Mirsky. Got a minute? Ever been woken up by the sound of the refrigerator compressor kicking on? Well, such clumsy heat exchange units featuring long metal coils may be on their way out. Becaus

发表于:2019-01-08 / 阅读(213) / 评论(0)

Scientific American(八)月

SSS 2008-03-19

This is Scientific Americans 60-Second Science. I am Cynthia Graber. This will just take a minute. Ants are known for working together, operating as a unit for the good of the colony. But not so fast, say researchers from the Universities of Leeds an

发表于:2019-01-08 / 阅读(285) / 评论(0)

Scientific American(三)月

Birthplace effect “出生地效应”

今年7月，14岁的美国华裔少年刘继打破老虎伍兹的纪录，成为美国青少年高尔夫锦标赛史上最年轻的冠军，同时刷新老虎伍兹保持了19年的纪录。刘继出生在纽约州一个只有11万人口的小城市史

发表于:2019-01-09 / 阅读(244) / 评论(0)

实用英语

VOA标准英语2010年-Study Questions Results of Clinical Tr

From time to time, researchers stop clinical trials because the results seem almost too good to be true. A new international study shows that is probably because those results are not true. When researchers end a clinical trial early because the resu

发表于:2019-01-13 / 阅读(221) / 评论(0)

VOA标准英语2010年(三月)

英语小达人 188 The Effect of Advertisement

The Effect of Advertisement 广告的效果 Some businessmen were talking about advertising on TV excitedly. As none of them had ever done it before, every one had his point of view. At this moment, Mr. Grey came by. He was a car dealer and he had on

发表于:2019-01-28 / 阅读(240) / 评论(0)

英语小达人

生活大爆炸第一季第六集_1：The Middle Earth Paradigm

生活大爆炸第一季第六集_1：The Middle Earth Paradigm -Rajesh: Okay, if no one else will say I will. We really suck at paintball. 好吧，如果没人说那就我来说。我们在彩弹比赛中的表现实在太差了！ -Howard: That wa

发表于:2019-01-28 / 阅读(332) / 评论(0)

生活大爆炸第一季

Placebo Effect Study

60 测试新药安慰剂的疗效 DATE=6-21-01 TITLE=SCIENCE REPORT - Placebo Effect Study BYLINE=Nancy Steinbach (Start at 59

发表于:2019-01-30 / 阅读(247) / 评论(0)

科技之光

每日一词【619】ripple effect：连锁反应

今天我们要学的词是ripple effect。 Ripple effect, 连锁反应。 The shutdown of the local mine had ripple effects on the entire community, 当地这家煤矿的关门，在整个社区引起了连锁反应。美国汽车业界人士警告说

发表于:2019-02-02 / 阅读(226) / 评论(0)

英语每日一词

每日一词【891】random：随机、任意的

今天我们要学的词是random。 Random, 是随机、任意的意思。The firefighters have to undergo a random drug test once a year, 消防队员每年要接受一次是否服用毒品的抽查。The boxer refused to submit random blood tests

发表于:2019-02-03 / 阅读(271) / 评论(0)

英语每日一词

每日一词【753】side effect：副作用

今天我们要学的词是side effect。 Side effect, 副作用。一项最近民调显示，Most Americans want health reform but fear its potential side effects, 大多数美国人都希望看到医疗改革，但是又担心改革可能带来的副

发表于:2019-02-05 / 阅读(209) / 评论(0)

英语每日一词

温室效应 The Greenhouse Effect

As the development of the society, people want to conquer the environment, they use the high technology to change the environment, when people are satisfied with what they did to the nature, the nature is starting to teach human being a lesson. In th

发表于:2019-02-06 / 阅读(221) / 评论(0)

英语作文

零基础学英语：affect & effect词汇辨析

Affect and effect are different in meaning, though frequently confused. Affect is chiefly used as a verb and its main meaning is to influence or make a difference to, as in the following example sentences: Affect一般用作动词，其含义为：影响

发表于:2019-02-07 / 阅读(292) / 评论(0)

英文语法词汇

学个词Learn a Word 第753期 side effect

发表于:2019-02-13 / 阅读(261) / 评论(0)

英语单词荟萃

中考英语热点作文：温室效应 The Greenhouse Effect

发表于:2019-02-13 / 阅读(195) / 评论(0)

英语作文

Pope leaves Vatican, resignation takes effect

VATICAN CITY, Feb.28 (Xinhua) -- The resignation of Pope Benedict XVI came into effect at 8 pm local time (1900 GMT) on Thursday, who had left the Vatican by helicopter for the papal vacation retreat in south Rome earlier in the afternoon. The pope h

发表于:2019-02-17 / 阅读(238) / 评论(0)

英语新闻

Efforts to ease medical costs take effect

BEIJING, Sept. 1 (Xinhua) -- Medicine prices at public clinics have been notably reduced thanks to a policy that promotes basic medicine, an office of the State Council said Thursday. Current price levels of basic medicine used by government-funded t

发表于:2019-02-18 / 阅读(193) / 评论(0)

英语新闻

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学英语单词

absorption approach

adjustable temperature range

alkali loss

annular(orbicular)ligament

arc of characteristic