告发者

例句：

1. 1. The police were called to the scene after a witness reported a crime.
   警方被叫到现场后，一名目击者报告了一起犯罪事件。
2. 2. The whistleblower revealed that the company was hiding profits in overseas accounts.
   这个吹哨人揭露说，该公司在境外账户隐藏利润。
3. 3. The whistleblower's report helped uncover corruption within the government.
   这位吹哨人的报告帮助揭露了政府内部的腐败行为。