Let's move on to what makes our product sell so well.
让我来说明是什么原因使我们的产品销售得那么好。
My dear friend, Mathilde. Let me tell you something. That necklace you borrowed from me wasn't a real diamond necklace. It wasn't valuable at all. The stones in the necklace were made of glass. It was worth five hundred francs at the most.