双语例句原声例句权威例句
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Life expectancy was calculated for the study cohort, all Israelis, and the population of the Russian Federation.
对上述研究对象、所有以色列人和俄罗斯联邦人的预期寿命进行了计算。
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Breast Cancer Risk in Relation to Ambient Air Pollution Exposure at Residences in the Sister Study Cohort.
姐妹研究队列中与居住环境空气污染有关的乳腺癌风险。
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The study cohort consisted of 60,323 Finns who were 25 to 74 years of age and free of any cancer at enrollment.
研究对象包括60323名年龄在25 ~ 74岁之间的芬兰人，他们在登记时没有任何肿瘤病史。
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So when we talk about a cohort study, this means taking a group of people and following them over time.
所以当我们提到定群研究,就意味着,有一群人参加实验并需一直追踪下去
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A cohort study means you take the same group of people and follow them every five years for that period of time.
定群研究意味着你只有一组研究对象,然后在研究期间每五年进行一次记录数据
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This particular study was a prospective cohort.
这个研究是前瞻性群组研究
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