英语词汇“observational study”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	observational study
释义	DictionarySeestudy observational study observational study A research study in which the results are obtained retrospectively or without a control group. Some examples include case reports, chart reviews, and longitudinal studies of large cohorts followed over time. Synonym: observational trialSee also: study MedicalSeeo/s
随便看	be of the opinion that... be of the opinion that… be of the same mind be of two minds be of unsound mind be of use be of your own making beog beograd beogradske otvorene škole be ok be okay beol beolco, angelo be old as the hills be on beon be on about be on about (something) a bone yard a bone-yard a boneyard a bong abong a bon marche

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