便衣警察 biàn yī jǐng chá

DEFINITIONS

  1. plain-clothed policeman

CHARACTERS

便 biàn
HSK 2
convenience, ease; expedient
衣 yī
HSK 1
clothes, clothing; cover, skin
警 jǐng
HSK 4
guard, watch; alert, alarm
察 chá
HSK 4
examine, investigate; notice