keep a diary

基本解釋

The first involved asking users to keep a diary of how they searched while they watched television--the assumption being that those searches would likely be more entertainment-focused.
第一項讓用戶對自己每天看電視時是如何搜索的進行日記，即假設那些搜索可能更傾向于以娛樂為重點。
They also had to keep a diary of their habits, including their sleep patterns and stress levels.
他們也要寫關于他們習慣的日記，包括他們的睡眠類型和壓力程度。
As part of the research, 63 families were asked to keep a diary of their use of communications technology.
作為調查的一部分，研究人員請63個家庭保留他們每日使用通訊技術的記錄。

If you want to remember your dream by the way keep your dreams--keep a dream diary, very useful, but everybody dreams three to four times a night.
如果你想記得自己夢見什么,那就寫一本夢境日記，這是非常有用的，每個人平均一晚作三四次夢。
耶魯公開課 - 心理學導論課程節(jié)選

In the case of casino gambling, you should keep a diary, including information like slot machine or table number, and the names of people who were present when you lost money.
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You call your guide who asks questions, tells you to keep a food diary for a week, and schedules an appointment with an allergist for the next week.
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