become a supergrass 成为线人
act as a supergrass 担任线人
inform as a supergrass 作为线人提供情报
supergrass testimony 线人证词
supergrass case 线人案件
1. The police relied on a supergrass to solve the case.
警方依靠线人来破案。
2. He agreed to become a supergrass in exchange for protection.
他同意成为线人以换取保护。
3. The supergrass gave crucial evidence in court.
这名线人在法庭上提供了关键证据。
4. The gang feared betrayal by a supergrass.
该团伙担心被线人出卖。
A: Why did he become a supergrass?
A：他为什么成为线人？
B: He wanted protection from the police.
B：他想从警方那里获得保护。
1) 向警方提供犯罪信息的线人
2) 揭发犯罪组织内部活动的人
3) 英国英语中常见的非正式法律术语
1. 线人，向警方提供犯罪信息的人
e.g.
The supergrass helped the police arrest the gang members.
线人帮助警方逮捕了犯罪团伙成员。
2. （英）提供关键证词的污点证人
e.g.
The supergrass testified in court against the criminals.
线人在法庭上指证罪犯。
noun
1. (British informal) a person who informs the police about criminals, especially from within a criminal group
Synonym: informer, informant, whistleblower