state trooper
noun /ˌsteɪt ˈtruːpə(r)/
/ˌsteɪt ˈtruːpər/
(also trooper)
- (in the US) a member of a State police force
（美国）州警察 - Scores of police and state troopers tried to clear the streets.
数十名警察和州警试图清理街道。
- Scores of police and state troopers tried to clear the streets.