检举者 /jiǎnjǔzhě/ angolul

whistle-blower [whistle-blowers]▼(one who reports a problem or violation to the authorities)
noun
[UK: ˈwɪs.l̩ ˈbləʊə(r)] [US: ˈwɪs.l̩ ˈbloʊə(r)]