n.通知者；密告者；為語言研究提供資料的人

The journalist did not want to reveal the identity of his informant. 那個(gè)新聞工作者不想透露消息提供人的身分。

Police hurried to the address supplied by their informant, only to learn that their bird had flown less than an hour before. 警察急忙趕到告密者提供的地址處，只獲悉他們要捉的人一小時(shí)不到前已逃走了。

Could you be my language informant for Dutch? 你愿意為我作荷蘭語的資料提供人嗎?