sales pitch       
noun [ S ] uk/ˈseɪlz ˌpɪtʃ/ us/ˈseɪlz ˌpɪtʃ/
 商品宣传,推销行话
a talk or a way of talking that is intended to persuade you to buy something
  I didn't want to listen to his sales pitch. 我不想听他的推销宣传。 
 Synonyms: patter (SPEECH)sales talkspiel 
See also: pitch noun