0 an advantage a country has over another country because it can produce a particular type of product more efficiently: --
1 the idea that countries should only export the goods that they are able to produce more efficiently than other countries and import the goods that other countries are able to produce more efficiently than them: --
We can complete it step by step however long the road is and it can't be completed however short the road is if you don't even mark your footprint.
Vi kan slutföra det steg för steg hur lång vägen än är och den kan inte slutföras hur kort vägen än är om du inte ens markerar ditt fotavtryck.