We haven't considered how we should study over very short periods of time.

我们还没有考虑过如何在很短的时间内学习。

youdao

People need time away from the pressures of study or work to relax and enjoy time with friends and family.

人们需要时间远离学习或工作的压力，放松身心，享受与朋友和家人在一起的时光。

youdao

The runners were all injury-free at the time of the study and ran 31miles each week.

在研究期间，所有的跑者每周会跑31公里，并且都没有受伤。

youdao

The study found that those who received lower doses of steroids by mouth spent less time in the hospital.

VOA: special.2010.06.23

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

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

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

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

An Oxford study of parental time diaries found that in 1975 mothers spent 1 to 2.5 hours a week on child care.

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As an academic specializing in the study of culture over time, I have spent my career looking for ways to teach rising generations about how our perceptions of gender roles influence everything from glass ceilings in the workplace to the way we treat our friends and neighbors.

FORBES: What Do Comic Books Teach Us About Gender Attitudes?

One third of England's undergraduate population studies part-time, and the importance of part-time study for the economy and social mobility is widely recognised.

BBC: Joan Bakewell urges action on part-time students