pitchmen
n.
摊贩，商品宣传员，（电台等的）广告员( pitchman的名词复数 );
例句:
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He dropped out of dental school and became one of the most famous athletic pitchmen of all time.
来自WSJ
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The Coca-Cola Co. already has, along with a lengthening line of other pitchmen.
来自FORBES
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Gold-coin pitchmen have played off the angst and distrust left by a global financial crisis.
来自WSJ