Professor wang, can I ask a few questions？ 王教授，可以请教您几个问题吗？

　　Certainly. 当然可以。

　　What is the tariff? 什么是关税？

　　It's a tax levy by the goveroverment on goods imported into that country. 关税是由政府对进口商品征收的一种税收。

　　Why does the goverment levy the tariff. 为什么要征收关税呢？

　　Tariff provides the goverment with extra tax revenue. 关税给政府提供了额外的收入。

　　Anything else. 还有呢？

　　Tariff raises the price at which the goods are sold in the importing country and therefore makes them less competitive with locally produced goods. 关税提高了进口商品在国内销售的价格，因此使得它们没有当地生产的商品具有竞争力。

　　Oh,I know.Thank you. Professor wang. 哦，我知道了。谢谢您，王教授。

　　Do not mention it. 不用客气。