investigate

To carry out a systematic inquiry to discover and examine facts; to study something in detail.

• investigation/ɪnˌvɛstɪˈɡeɪʃən/(n)调查；研究
• investigator/ɪnˈvɛstɪɡeɪtə/(n)调查员；研究者
• investigative/ɪnˈvɛstɪɡətɪv/(adj)调查性的

• investigate a claim
• launch an investigation
• under investigation
• criminal investigation
• investigate thoroughly
• investigative journalism

1. 1.Regulators have launched a formal investigation into the company's pricing practices.
2. 2.The journalist spent months investigating the story before publishing her findings.

• examine/ɪɡˈzæmɪn/— look at carefully
• probe/prəʊb/— investigate thoroughly — implies depth
• enquire/ɪnˈkwaɪə/— ask questions to find out — BrE

from Latin "investigare" = to track, from "in-" + "vestigare" (to track, trace footprints)