searching
adjective uk/ˈsɜː.tʃɪŋ/ us/ˈsɝː.tʃɪŋ/
探究真相的，刨根问底的
intended to find out the often hidden truth about something
I think we need to ask some searching questions about how the money has been spent. 我觉得我们应该刨根问底，问一问那笔钱到底是如何花的。
Synonym: probing