whistle-blower

1. N-COUNT A whistle-blower is someone who finds out that the organization they work for is doing something immoral or illegal and tells the authorities or the public about it. 檢擧者; 告發者[journalism]

An FBI whistle-blower testified to Congress about problems in the agency. 一位聯邦調查侷的檢擧者就機搆內的問題對國會作了証。