informer
n. 告密者; 通知者
An informer is a person who tells the police that someone has done something illegal.
...two men suspected of being police informers.
被怀疑是警方线人的两名男子
1. one who reveals confidential information in return for money
Is he merely an informer, giving information to the child?
他只是个教导者, 给孩子知识 吗 ?
One of the gang members had turned informer.
团夥中的一员后来变成了告密者.
An informer supplied the police with the names of those involved in the crime.
一位告发者向警察局提供了涉及这次犯罪的人员名单.
I would never act as informer against you.
我永远也不会做对你不利的告密者.
The informer provided very important clues for us.
线人给我们提供了非常有价值的线报.