Definition
to identify exact specifics about something
明确了解；确认
In the meeting, we need to pin down the client's requirements so we can proceed with the next steps.
在会议中，我们需要确认客户的需求，以便进行下一步。
His comments helped us pin down the details of the project, allowing us to clearly understand each step.
他的评论帮助我们确定了项目的细节，让我们清楚地了解每一步。
In the report, the researcher needs to pin down the sources and limitations of the data.
在报告中，研究人员需要明确数据的来源和限制。