什么是關稅？為什么要征收關稅

今天的這段對話，在討論關稅，
 
什么是關稅？為什么要征收關稅
 
來聽今天的講解:
 
A:Professor wang can I ask a few questions?
 
王教授，可以請教您幾個問題嗎？
 
B:Certainly.
 
當然可以。
 
A:What is the tariff?
 
什么是關稅？
 
B:It's a tax levy by the goveroverment on goods imported into that country.
 
關稅是由政府對進口商品征收的一種稅收。
 
A:Why does the goverment levy the tariff？
 
為什么要征收關稅呢?
 
B:Tariff provides the goverment with extra tax revenue.
 
關稅給政府提供了額外的收入。
 
A:Anything else.
 
還有呢?
 
B:Tariff raises the price at which the goods are sold in the importing country and therefore makes them less competitive with locally produced goods.
 
關稅提高了進口商品在國內銷售的價格，因此使得它們沒有當?shù)厣a的商品具有競爭力。
 
A:Oh,I know. Thank you. Professor wang.
 
哦，我知道了。謝謝您，王教授。
 
B:Do not mention it.
 
不用客氣。