劍橋詞典business specialized to try to persuade a customer who is already buying something to buy more, or to buy something more expensive 向上推銷（試圖說服顧客購買額外或者更昂貴的產(chǎn)品） They are trained to upsell customers to a larger drink . 他們受到訓(xùn)練如何勸說顧客購買更大量的飲料。 返回 upsell