n.告发者；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。
The Inspector had received a phone call from an informer. 警长刚刚接到一名通报者的电话。
Any one of our employees could be the informer. 我们的任何一位雇员都有可能成为告密者。
I would never act as an informer against you . 我永远也不会做对你不利的告密者。
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