<prompt> Translate the following text to EnglishGillette alianzisha mashine ya kunyoa ya Trac II mnamo 1972, na miaka mitatu baadaye, Saturday Night Live ilifanya parody ya mfano wa blade tatu.  <response>: Gillette introduced the twin-blade Trac II razor in 1972, and three years later, Saturday Night Live ran a parody of a three-blade model. 