Police hurried to the address supplied by their informant, only to learn that their bird had flown less than an hour before.
警察急忙赶到告密者提供的地址处，只获悉他们要捉的人一小时不到前已逃走了。
A person, especially an informant, who communicates something.
传递信息的人传达某事的人，尤指密告者
The journalist did not want to reveal the identity of his informant.
那个新闻工作者不想透露消息提供人的身分。
