Dale Robinson, a former Miami-Dade Transit Track and Guideway Supervisor, and Marcia Robinson, his wife, were sentenced yesterday by U.S. District Judge K. Michael Moore after pleading guilty to federal charges. Dale Robinson pleaded guilty to soliciting a bribe from a contractor for Miami-Dade Transit in connection with the issuance of Metrorail repair and maintenance contracts. Marcia Robinson pleaded guilty to misprision of a felony for helping her husband cover up the bribery scheme.