surveillance

n.(囚犯等的)看守，监视，监督

surpassingly, surplice, surplus, surprise, surprised, surprising, surprisingly, surreal, surrealism, surrealist, surrealistic, surrender, surreptitious, surreptitiously, surrey, surrogate, surround, surrounding, surroundings, surtax, survey, surveyor, survival, survive, surviving, survivor, sus (also suss), susceptibility, susceptible, suspect, suspect sb. of, suspend, suspended, suspended animation, suspender, suspender belt, suspenders, suspense, suspension, suspension bridge,