Okay, the user wants me to translate "marketing funnel" into Thai. Let me check if the term is already in Thai. Since it's an English term, I need to translate it. The direct translation would be "ท่อส่งการตลาด" but I should confirm if that's the standard term. Sometimes, business terms are kept in English, but the user specified to translate all content into Thai. So I'll go with the translation. No need for explanations, just the result.