detective work
noun/dɪˈtektɪv wɜːk/
/dɪˈtektɪv wɜːrk/
[uncountable]- the activity of trying to discover more information about something
侦探工作：试图发现有关某物的更多信息的活动 - He did some detective work and figured out what had happened to his bike.
经过调查，他弄清楚了他的自行车出了什么问题。
- He did some detective work and figured out what had happened to his bike.