Two lawyers, John C. Tarantino of East Orange, N.J., and Robert H. Burns of Miami, were sentenced yesterday in Washington to long prison terms for their roles in what prosecutors have called a "complex, sophisticated and lucrative" cocaine and money laundering ring between 1977 and 1982.

U.S. District Judge Thomas F. Hogan sentenced Tarantino, 38, who was once an assistant city attorney in East Orange, to serve a 4- to 12-year term for conspiring to distribute cocaine and concurrent four-year terms on each of four counts of illegal interstate travel in connection with the ring's activities. The judge also fined Tarantino $22,000.

Later, Hogan gave Burns, 54, a 15-year sentence and fined him $25,000 for a conviction of conspiracy. Hogan said the term should start after Burns completes a 9- to 27-year sentence he is serving in an unrelated drug case.

Court officials said both men probably would serve a maximum of eight years, four months less than current federal parole guidelines.

Former Washington lobbyist Fred B. Black Jr., who also was convicted in the case, was to be sentenced yesterday. But at the request of Black's lawyer, Hogan postponed his sentencing until July 22.