英文翻译investigative，急求！

中文翻译n. 调查, 研究
英文解释[ 名词 ] designed to find information or ascertain facts; "a fact-finding committee"; "investigative reporting
例句1. an inquiry into unfamiliar or questionable activities; "there was a congressional probe into the scandal"2. the work of inquiring into something thoroughly and systematically

2 The investigation mode of intelligence and information is different from traditional investigation mode in that it uses information system and communication network to conduct investigative activities.
3 A Talk on Establishing New Modern Investigative Mode Isolates and Control of the Disease