informant
🇺🇸
/ɪnˈfɔːrmənt/
🇬🇧
/ɪnˈfɔːmənt/
A person who secretly gives information to police or media.
The police informant provided crucial details about the crime.
警方線人提供了關於犯罪的關鍵細節。
A person who gives information for research or study.
The researcher interviewed an informant about local customs.
研究人員採訪了一位資訊提供者了解當地習俗。