keep a diary

基本解释

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.
第一项让用户对自己每天看电视时是如何搜索的进行日记，即假设那些搜索可能更倾向于以娱乐为重点。
They also had to keep a diary of their habits, including their sleep patterns and stress levels.
他们也要写关于他们习惯的日记，包括他们的睡眠类型和压力程度。
As part of the research, 63 families were asked to keep a diary of their use of communications technology.
作为调查的一部分，研究人员请63个家庭保留他们每日使用通讯技术的记录。

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.
如果你想记得自己梦见什么,那就写一本梦境日记，这是非常有用的，每个人平均一晚作三四次梦。
耶鲁公开课 - 心理学导论课程节选

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.
FORBES: Most Overlooked Deductions
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.
FORBES: How One Company Is Growing by Shrinking Healthcare Costs for Others