surtax

n [U] tax charged at a higher rate than the normal on income above a certain level 附加税（对超过限度的收入所徵收的）.

surpassing, surpassingly, surplice, surplus, surprise, surprised, surprising, surprisingly, surreal, surrealism, surrealist, surrealistic, surrender, surreptitious, surreptitiously, surrey, surrogate, surround, surrounding, surroundings, surveillance, 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,