观察研究

observational study的用法和样例:

例句

  1. Pacifier use was associated with reduced duration of breast-feeding in most observational studies.在多数观察研究中,使用安抚奶嘴与减少母乳哺喂期间有关。
  2. This was an observational study and therefore treatment strategy was not randomised but left to the discretion of the individual doctor or the patient.这是一个观察研究,而且治疗策略也不随机,但它留给医生或患者很多思考。

By Caty Weaver Broadcast: August 8, 2003 This is Bill White with the VOA Special English Environment Report. A new study shows an eighty percent decrease of hard coral in the Caribbean Sea over the pa

发表于:2018-12-01 / 阅读(251) / 评论(0) 分类 VOA2003(下)-环境与健康

by Caty Weaver Broadcast: July 4, 2003 This is Steve Ember with the VOA Special English Environment Report. Scientists in the United States say plant life has increased on Earth in the past twenty yea

发表于:2018-12-01 / 阅读(240) / 评论(0) 分类 VOA2003(下)-环境与健康

[00:00.00]Module 1 LEARNING METHODS [00:05.51]UNIT 2 You have to study [00:08.39]hard to get good results. [00:11.22]1 Listen and read. [00:15.40]Get Good Results in Your Exams! [00:19.95]You must understand the correct way to study [00:23.25]if you

发表于:2018-12-04 / 阅读(183) / 评论(0) 分类 外研社新标准初中英语九年级

By Caty Weaver Broadcast: September 12, 2003 This is Bob Doughty with the VOA Special English Environment Report. Scientists in the United States have reported some good news about the 1)ozone in the

发表于:2019-01-11 / 阅读(214) / 评论(0) 分类 VOA2003(下)-环境与健康

EDUCATION REPORT - Study of a Charter School Project Finds Big Gains on Tests By Nancy Steinbach Broadcast: Thursday, August 25, 2005 I'm Barbara Klein with the VOA Special English Education Report. C

发表于:2019-01-30 / 阅读(203) / 评论(0) 分类 教育与新闻

AGRICULTURE REPORT - Study Finds Warmer Nights Mean Less Rice By Mario Ritter Broadcast: Tuesday, July 06, 2004 This is Bob Doughty with the VOA Special English Agriculture Report. Scientists have had

发表于:2019-01-30 / 阅读(179) / 评论(0) 分类 农业与发展

DEVELOPMENT REPORT - UN Study Says Gains Would Outweigh Cost to End Child Labor By Jill Moss Broadcast: Monday, February 16, 2004 This is Robert Cohen with the VOA Special English Development Report.

发表于:2019-01-30 / 阅读(183) / 评论(0) 分类 农业与发展

DEVELOPMENT REPORT - Study Says Vitamins May Slow AIDS Virus By Jill Moss Broadcast: Monday, July 12, 2004 This is Robert Cohen with the VOA Special English Development Report. A study of women infect

发表于:2019-01-30 / 阅读(180) / 评论(0) 分类 农业与发展

BEIJING, March 24 (Xinhuanet) -- A new study has found that many overweight(超重的) women and children often underestimate how heavy they are, according to media reports Wednesday. The study, conducted by researchers from Columbia University Medic

发表于:2019-02-02 / 阅读(192) / 评论(0) 分类 英语新闻

LOS ANGELES, March 27 (Xinhua) -- Walnuts have a combination(综合) of more healthful antioxidants and higher quality antioxidants than any other nut, U.S. researchers have found. Study findings were presented on Sunday at the 241st National Meeting

发表于:2019-02-02 / 阅读(145) / 评论(0) 分类 英语新闻

BEIJING, Oct. 12 (Xinhuanet) -- Study found that women who took multivitamins may actually be at risk, media reports on Wednsday. Women who took the dietary supplements vitamin B6, folic acid, magnesium, zinc, copper, iron and multivitamins had a hig

发表于:2019-02-06 / 阅读(181) / 评论(0) 分类 英语新闻

That if your vocabulary is limited your chances of success are limited. That one of the easiest and quickest ways to get ahead is by consciously building up your knowledge of words. The the vocabulary of the average person almost stops growing by the

发表于:2019-02-07 / 阅读(213) / 评论(0) 分类 阅读空间

LONDON, Jan. 17 (Xinhua) -- A study released by VisitBritain on Thursday suggested that image of the UK was greatly boosted by the hosting of the London 2012 Games. According to result of the study, global perceptions of welcome, Britain's overall na

发表于:2019-02-07 / 阅读(257) / 评论(0) 分类 英语新闻

BEIJING, Sept. 2 (Xinhuanet) -- Insomnia costs average U.S. worker 11.3 days, or 2,280 dollars, in lost productivity each year, according to a new study published in journal Sleep. The total cost to the nation is 63.2 billion dollars annually, the st

发表于:2019-02-07 / 阅读(179) / 评论(0) 分类 英语新闻

LOS ANGELES, June 9 (Xinhua) -- Senior U.S. performers in Los Angeles and elsewhere are generally happy with their lives as artists, although they still face age discrimination, a study published Thursday showed. Focusing on actors, dancers, choreogr

发表于:2019-02-11 / 阅读(177) / 评论(0) 分类 英语新闻

Money may not buy you happiness, but happiness can improve your financial bottom line. A study by researchers from University College London finds that young people who report a higher level of happiness and satisfaction with their lives earn higher

发表于:2019-02-18 / 阅读(156) / 评论(0) 分类 英语新闻

LOS ANGELES, May 6 (Xinhua) -- Limiting prolonged bottle use in children may be an effective way to help prevent obesity, a new study suggests. For the study, researchers from the Center for Obesity Research and Education at Temple University (CORETU

发表于:2019-02-18 / 阅读(163) / 评论(0) 分类 英语新闻

Indian health officials have rejected a new medical study warning of widespread drug-resistant bacteria in the country's capital. But the co-author of the study says Delhi is in denial, and warns the bacteria can spread easily around the world, possi

发表于:2019-02-18 / 阅读(172) / 评论(0) 分类 英语新闻

Study: Living In A City Might Make You Crazy Ever wondered why those apple-cheeked Himalayan villagers look so untroubled, even as most of your friends and family make weekly visits to the therapist? You might finally have your answer -- and it reall

发表于:2019-02-19 / 阅读(182) / 评论(0) 分类 阅读空间

Observational selection, on this Moment of Science. D: Grubs, on today's moment of science. Grubs are really cool because if you squish 'em . . . oh, I give up. I can't read this. Y: Why not? D: I'm sorry, Ya?l, I'm just discouraged. You see, for yea

发表于:2019-02-23 / 阅读(153) / 评论(0) 分类 英语时差8,16
学英语单词
acute follicular tonsillitis
alarm time
Ardchiavaig
artificial intelligence approach
associtation reaction
bearson
Blanquilla, I.
boiler vibration
brake command amplifier
build a chapel
bump of locality
Bφstrup
convertor station
copers
cross-compiling & assembling
dark
dead time delay
destructioner
detector bar
developmental total
deviascope
disc crank
distribution efficiency
divine-right
double direction
ebd
Elliana
entropy of vaporization
environmental self-purification
Erik Alfred Leslie Satie
evobioside
excision repair
export-led
faralimomab
filarial disease
fogden
fossorials
garbage routine
geometric dance
gnassingbe
grinding zone
height series number
His's perivascalar space
huntsmans
implanter
isovenenatine
James Franck
Kasplya
kicky-wicky
Kijwa
kordell
kushites
lavette
lead cast
leukocyte granule
lignin-humus complex
low fefinition television
metocurine
misallocations
net forward gain
openhand
opere citato
outline
Peterlee
plastic effect
porzanas porzanas
pseudomorph by substitution
Puerto Portillo
radiation decontamination
reciprocal factor
red heifer
repersuade
represses
reunionist
rumplestiltskin
Saybolt ring number of kerosene
scillipicrin
seaside
self-acted
showerhead
single-bundle fiber cable
smarta
South Polar Ocean
southern elephant seals
spirey
stands on ceremony
stonewares
synchronous phase converter
temperature and pressure reducer
the battery
the yellow press
theodolites
thymocyte
thymus independent region
TTMF
tyrannics
united kingdom of great britain and northern irelands
uridrosis
wardship
white grained
yearly output
zone CLV