Does a good equivalent of "pitch" not exist?
Pitch 
  
  3a: to present or advertise especially in a high-pressure way : plug, promote
  
  3b: to attempt to persuade especially with a sales pitch
  
  In these cases, 'pitch' means "推銷" E.g. "推銷某主張" (to pitch an idea); "推銷某產品" (to pitch  a product)


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  3c : to present (a movie or program idea) for consideration (as by a TV producer)
  
  In this case, 'pitch' means "推薦" or 提議  E.g. "推薦某劇本" / "提議某劇本" (to pitch a script)



推銷 - to promote --> pitch
推薦 - to recommend --> pitch
提議 - to proposal --> pitch


Typically, a pitch is an oral presentation 

Pitch = (現場)推銷; (現場)推薦