暗中監視 àn zhōng jiān shì

DEFINITIONS

  1. to monitor secretly
  2. to spy on

CHARACTERS

暗 àn
HSK 5
dark; obscure; in secret, covert
中 zhōng
HSK 1
central; center, middle; in the midst of; hit (target); attain
監 jiān supervise, control, direct
視 shì look at, inspect, observe, see