investigation

調査、捜査

犯罪や問題などの状況を明らかにするため、事実を詳しく調べること。

やさしい英語で： A careful search for facts to explain a crime, problem, or other situation.

• The police began an investigation.
• Their investigation found several safety problems.
• Two investigations into the crash are still underway.

使い方： an investigation into something (Police started an investigation into the fire.); under investigation (The cause of the accident is under investigation.)

類義語： inquiry, examination

よく使う表現： police investigation, investigation into something, launch an investigation, detailed investigation