spy on

v.

侦查，暗中监视；瞰；窥视；谍

HOW COMPANIES SPY ON EMPLOYEES
Breeding molecules to spy on cells.
Corporations that spy on their employees
Bush Lets U.S. Spy on Callers Without Courts
Chinese firm helps Iran spy on citizens
Powerful New Detectors Spy On Strange Spinning Nuclei
Russia Is Stockpiling Drones to Spy on Street Protests
A spy to spy on a spy: From type to token representation with cell assemblies
and Eric Lichtblau. Bush Lets U.S. Spy on Callers Without Courts
Tsien, R. Y. Building and breeding molecules to spy on cells and tumors. FEBS Lett. 579, 927-932