很难准确找出问题的根源。

It is difficult to ___pinpoint the exact cause of the problem.

研究人员正试图准确找出这种现象背后的原因。

Researchers are trying to ___pinpoint the reasons behind this phenomenon.

报告准确指出了我们工作流程中几个需要改进的关键领域。

The report ___pinpoints several key areas for improvement in our workflow.