那个推销员在商场里热情地向顾客展示新型厨房刀具。

The ___pitchman enthusiastically demonstrated the new kitchen knives to customers at the mall.

这个电视购物节目的推销员非常善于说服观众购买产品。

The ___pitchman on the infomercial was very convincing in getting viewers to buy the product.