限制性效应

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(100) / 评论(0) 分类 VOA2003(下)-环境与健康

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(232) / 评论(0) 分类 自考英语(一)78讲

If you're confused about that versus which, don't feel bad. It's one of the most common topics people ask me about. I used to work as a technical writer, and I'd often edit documents in which people used the wrong word. More than once, I'd put in the

发表于:2019-01-02 / 阅读(68) / 评论(0) 分类 英语语法 Grammar Girl

Since Halloween is coming up, I thought you could use a refresher about whiches--more specifically, when to use a which and when to use a that. To understand the difference between which and that, first you need to understand the difference between a

发表于:2019-01-02 / 阅读(78) / 评论(0) 分类 英语语法 Grammar Girl

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(118) / 评论(0) 分类 实用英语

Libyans Upset Over Restrictive Voting Abroad Few Libyans remember days like this when they could vote. And, it counted. Just saying that -- Libyan government. 'Voting for the Libyan government' has a nice, sweet ring to it, said Libyan voter Adam Sbi

发表于:2019-01-13 / 阅读(80) / 评论(0) 分类 VOA标准英语2012年(七月)

California Leads US in Restrictive Gun Laws There are few restrictions on owning guns in most U.S. states. Guns are widely used for hunting and sport, and for self-protection. California and several other states, including New York and Massachusetts,

发表于:2019-01-13 / 阅读(78) / 评论(0) 分类 VOA标准英语2012年(七月)

定语从句可分为限制性和非限制性两种: 1.限制性定语从句(Restrictive attributive clauses): 限制性定语从句,使所修饰的词表示一个特定的人或东西,如果去掉它,那个词就失去意义,句子就不

发表于:2019-01-18 / 阅读(98) / 评论(0) 分类 英文语法词汇

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(78) / 评论(0) 分类 英语小达人

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(116) / 评论(0) 分类 科技之光

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(81) / 评论(0) 分类 英语每日一词

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(93) / 评论(0) 分类 英语每日一词

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(85) / 评论(0) 分类 英语作文

Do you sometimes wonder whether to use that or which in a sentence? In many cases, in British English, both words are equally correct. 你是不是经常想要弄明白that和which在句中有什么区别?在英式英语中的一些使用场景中,这

发表于:2019-02-07 / 阅读(57) / 评论(0) 分类 英文语法词汇

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(125) / 评论(0) 分类 英文语法词汇

Do you sometimes wonder whether to use that or which in a sentence? In many cases, in British English, both words are equally correct. 你是不是经常想要弄明白that和which在句中有什么区别?在英式英语中的一些使用场景中,这

发表于:2019-02-09 / 阅读(98) / 评论(0) 分类 英文语法词汇

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:2019-02-13 / 阅读(145) / 评论(0) 分类 英语单词荟萃

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:2019-02-13 / 阅读(71) / 评论(0) 分类 英语作文

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(96) / 评论(0) 分类 英语新闻

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(75) / 评论(0) 分类 英语新闻
学英语单词
air-air heat exchanger
anterior mediastinal lymph glands
Antonines
astrophotometry
attitudinal
beauty-parlor
blasting cable
blue films
Breitenfelde
bull into
camouflaged target
cantharophily
carbide-tipped circular sawblade for wood working
cast a spell on sb
chloriodic
cholangio-
chondrodystrophoid
coastal area
community involvement
consolized
continuous positive pressure venti lation
cottonocracy
counterpoise spring
crabburger
cucumber pickles
cuesticks
Danyang-gun
debranch
deceleration time
deep drawnblister pack
delayed radiation effect
Diandranthus corymbosus
disfigured
disproportionation reaction
driving box gib
eat one's young
echolocates
educational economic
elastoplastic strain correction factor
explicit address
fine sprays
framing box
free-cutting bronze
full - length novel
glottic carcinoma
Haloxylon ammodendron
Hatchcock's sign
Havana
have a grudge against sb
heartstruck
hemisynergia
immersive imaging
insurance for movables
inverted teat
jandel
Jigawa
Kezhemskiy Rayon
lay cable
linklist
Mayer problem in calculus of variations
meningothelioma
methaemalbumin
methyl-isorhodanate
mirror scanning mechanism
misappraisals
moment area method
mossy forest zone
MUAMC
neofibers
neuron-specific
nonredundancy
nonsynthesized
oltremare
ortholignitous coal
paratrechina amia
Paulo Afonso Falls
payroll taxes
pigmentum
porture
prepigmental
primaty mouth
principal orbit
proto-racism
pulse-detecting circuit
rift-valley lake
rosenshine
saltdean
sanden
settled bed fast reactor (SBFR)
sink roll
sinoradimella virgata
star trails
storage shell
supply protable sprinkler
term of detention
think sth over
triple braided
twisting point
voltage derating
water down something
wet end efficiency
wingspan